Wikipedia:WikiProject U.S. Roads/Maryland/All-time list
Given are the years of the first and last official maps the routes appear on. These are not always the exact years the routes were created or eliminated.
Routes 1-6 and 12-37 were assigned by 1927. It appears that other state roads received numbers (into the 380s?) in about 1929, but only a few of them appear on maps until 1939. A year before 1939 means that the road was state maintained beginning on that year's map (for now I've only gone back to 1928).
The 1939 map may have some routes that were actually created several years later; 683 appears to be the highest number actually existing in 1939. Those that are not on the 1940 map are listed with an asterisk.
Most routes for which the sole source is http://www.mdroads.com/ are listed after the table.
| from | to | notes | |
|---|---|---|---|
| MD 2 | 1927 | now | |
| MD 3 | 1927 | now | |
| MD 4 | 1927 | now | |
| MD 5 | 1927 | now | |
| MD 6 | 1927 | now | |
| MD 7 | 1938? ← US 40 (part) |
now | |
| MD 8 | 1960 ← 33 (part) |
now | |
| MD 9 | never | never | proposed for US 140 |
| MD 10 | 1974 | now | |
| MD 12 | 1927 | now | |
| MD 14 | 1927 | now | |
| MD 16 | 1927 | now | |
| MD 17 | 1940 ← 33 |
now | |
| MD 17 | 1927 | 1939 → 33 | |
| MD 18 | 1927 | now | |
| MD 19 | 1927 | now | |
| MD 20 | 1927 | now | |
| MD 21 | 1927 | now | |
| MD 22 | 1927 | now | |
| MD 23 | 1927 | now | |
| MD 24 | 1927 | now | looks like a piece of Trimble Road or Nuttal Avenue in Edgewood was a state road (e.g. 1961 map) - what was it numbered? |
| MD 25 | 1927 | now | |
| MD 26 | 1927 | now | |
| MD 27 | 1934 ← 29 |
now | |
| MD 27 | 1927 | 1933 → US 29 | |
| MD 28 | 1927 | now | |
| MD 29 | 1927 | 1933 → 27 | |
| MD 30 | 1927 | now | |
| MD 31 | 1927 | now | |
| MD 32 | 1927 | now | what was old 32 through Dayton-Glenelg? |
| MD 33 | 1940 ← 17 |
now | |
| MD 33 | 1927 | 1939 → 17 | |
| MD 34 | 1927 | now | |
| MD 35 | 1927 | now | |
| MD 36 | 1927 | now | |
| MD 37 | 1963? | 1997 | map style changes at the same time, so it may predate 1963; one source says it may be as early as 1935 |
| MD 37 | 1927 | 1934 → US 219 (part) | |
| MD 38 | 1928 | now | |
| MD 39 | 1928 | now | |
| MD 41 | 1965 | now | |
| MD 41 | 1928 | 1955 → 135 (part) | |
| MD 42 | 1928 | now | |
| MD 43 | 1965 | now | where was 43 originally? Probably bridge to Blaine (now part of 38) |
| MD 44 | 1936 | 1968 | Fort Frederick State Park where was 44 originally? Probably bridge to Bloomington (became part of 135) |
| MD 45 | 1957 ← US 111 (part) |
now | |
| MD 45 | 1928 | 1955? | Frostburg-west unlabeled on state maps but listed on http://www.mdroads.com/routes/040-059.html#md045 and on https://catalog.archives.gov/id/12549393 |
| MD 46 | 1950 | 1989 → I-195 |
where was 46 originally? Probably US northest of Cumberland-Cumberland (became part of US 220) |
| MD 47 | 1928 | now | |
| MD 48 | 1928 | 1949 | Hazen Road, northeast of Cumberland |
| MD 49 | 1928 | now | |
| MD 51 | 1928 | now | labeled in 1933 |
| MD 52 | 1928 | 1955 | Williams Road, Cumberland |
| MD 53 | 1928 | now | |
| MD 54 | 1969 ← 455, 467 |
now | |
| MD 54 | 1933 | 1949? | Myersville-northwest where was 54 originally? probably Cumberland to West Virginia (became part of US 220) |
| MD 55 | 1928 | now | |
| MD 56 | 1928 | now | |
| MD 57 | 1928 | now | |
| MD 58 | 1928 | now | |
| MD 59 | 1930 | 1955 | Middletown-southeast |
| MD 59 | 1928 | 1928 → 68 (part) |
Probably Williamsport-southeast |
| MD 60 | 1928 | now | labeled in 1933 |
| MD 61 | 2001 (HLR) | now | |
| MD 61 | 1928 | 1955 | east of Hagerstown |
| MD 62 | 1928 | now | |
| MD 63 | 1928 | now | |
| MD 64 | 1928 | now | |
| MD 65 | 1928 | now | |
| MD 66 | 1928 | now | |
| MD 67 | 1928 | now | |
| MD 68 | 1928 | now | |
| MD 69 | 1928 | 1955 | Braddock Heights-south |
| MD 70 | 1954 | now | |
| MD 70 | 1928 | 1949 → 464 (part) |
now 478 |
| MD 71 | 1956 | 1958 → US 301 (part) | |
| MD 71 | 1928 | 1955 → 194 |
labeled in 1933 |
| MD 72 | 1928 | 1955 | Lewistown-northeast |
| MD 73 | 1928 | 1968 | Frederick-northwest |
| MD 74 | 1928 | 1955 | Frederick-north |
| MD 75 | 1928 | now | labeled in 1933 |
| MD 76 | 1928 | now | |
| MD 77 | 1928 | now | |
| MD 78 | 1928 | 1969 → 180 (part) |
now 351 |
| MD 79 | 1928 | now | |
| MD 80 | 1928 | now | |
| MD 81 | 1928 | 1975 → 550 (part) |
labeled in 1933 was everything at the west end always 81? |
| MD 82 | 1930 | 1995 | Leland Street/Maple Avenue, Bethesda |
| MD 82 | 1928 | 1928 → 75 (part) |
Probably east from Union Bridge |
| MD 83 | 1928? | when? | was the one on Church Street, New Windsor (http://www.mdroads.com/routes/080-099.html#is083) the original one? possibly originally 71 northeast of Taneytown |
| MD 84 | 1928 | now | |
| MD 85 | 1970 ← US 15 (part) |
now | |
| MD 85 | 1928 | 1953 | Middleburg-east |
| MD 86 | 1928 | now | |
| MD 87 | 1928 | 1955 | Mexico-southeast |
| MD 88 | 1928 | now | |
| MD 89 | 1928 | 1955 | Hampstead-east |
| MD 90 | 1972 | now | |
| MD 90 | 1928 | 1955 | Hampstead-southwest |
| MD 91 | 1928 | now | |
| MD 92 | 1934 | 1955 | Smithsburg-northeast |
| MD 92 | 1928 | 1928 → 91 (part) |
Probably Gamber-northeast |
| MD 93 | 1928 | 1955 | east of Eldersburg |
| MD 94 | 1928 | now | |
| MD 95 | 1930 | 1999 (HLR) | Comus Road, Comus-west |
| MD 95 | 1928 | 1928 → 94 (part) |
Probably north from US 40 |
| MD 96 | 1928 | 1955 | Daisy-north |
| MD 97 | 1928 | now | labeled in 1933 |
| MD 98 | 1928 | 1955 | Glenelg-east |
| MD 99 | 1928 | now | |
| MD 100 | 1971 ← 177 (part) |
now | |
| MD 100 | 1928 | 1955 → 99 (part) |
north of Ellicott City |
| MD 101 | 1928 | 1955 | northeast of West Friendship |
| MD 102 | 1928 | 1949? | Maryland Avenue, Ellicott City |
| MD 103 | 1928 | now | |
| MD 104 | 1977 ← 175 (part) |
now | first labeled in 1979 |
| MD 104 | 1928 | 1949? | southeast of Ellicott City |
| MD 105 | 1928 | 1949? | Ellicott City-north |
| MD 106 | 1928 | 1940 → 32 (part) | |
| MD 107 | 1928 | now | labeled in 1934 |
| MD 108 | 1928 | now | labeled in 1933 |
| MD 109 | 1928 | now | |
| MD 110 | 1948 | 1948 | northwest of Mt. Airy |
| MD 110 | 1928 | 1928 | Probably near Laytonsville-South |
| MD 112 | 1928 | now | |
| MD 114 | 1930 | 1973 | Gaithersburg-north unlabeled after 1957 |
| MD 115 | 1928 | now | labeled in 1933 |
| MD 116 | 1928 | 1959 → 650 (part) | |
| MD 117 | 1928 | now | |
| MD 118 | 1928 | now | |
| MD 119 | 1999 (HLR) | now | |
| MD 119 | 1928 | 1952 → 121 (part) |
Dawsonville-south, Dawsonville-Old Germantown Dawsonville-Old Germantown became 121 in 1951-1952; north segment of this returns in 1955-1956, but has no number after 1957 |
| MD 120 | 1930 | 1999 (HLR) | Germantown-north |
| MD 121 | 1928 | now | |
| MD 122 | 1991 | now | |
| MD 122 | 1928 | 1973 | Damascus-northwest |
| MD 123 | 1928 | 1973 | Damascus-Lewisdale |
| MD 124 | 1928 | now | labeled in 1933 |
| MD 125 | 1928 | now | |
| MD 126 | 1928 | 1997 | Gwynn Oak Avenue, Baltimore-Woodlawn (still in 2005 Baltimore City HLR) |
| MD 127 | 1928 | 1985 | north of Reisterstown may have swapped with 128 at some point |
| MD 128 | 1930 | now | |
| MD 129 | 1928 | now | |
| MD 130 | 1928 | now | |
| MD 131 | 1928 | now | |
| MD 132 | 1969 ← 22 (part) |
now | |
| MD 132 | 1930 | 1954 | northwest of Lutherville |
| MD 133 | 1928 | now | |
| MD 134 | 1928 | now | |
| MD 135 | 1930 | now | probably not the original 135 (doesn't fit the clustering) |
| MD 136 | 1928 | now | doesn't quite fit the clustering; did they intend to make this 163? |
| MD 137 | 1928 | now | |
| MD 138 | 1928 | now | |
| MD 139 | 1928 | now | labeled in 1933 |
| MD 140 | 1979 ← US 140 (part), 97 (part) |
now | |
| MD 141 | 1928 | 1960 | Allegheny Avenue, Towson unlabeled until 1946 |
| MD 142 | 1928 | 1979 | Weisburg-Shawsville |
| MD 143 | 1928 | 1981 | Cockeysville-Jacksonville |
| MD 144 | 1952 ← US 40A (part) |
now | |
| MD 144 | 1928 | 1939 → 146 (part) |
Towson-north |
| MD 145 | 1928 | now | |
| MD 146 | 1928 | now | |
| MD 147 | 1928 | now | labeled in 1933 |
| MD 148 | 1928 | 1962 | Joppa Road, Towson-Perry Hall |
| MD 149 | 1928 | 1965 | White Marsh-Chase also planned for the Windlass Freeway |
| MD 150 | 1928 | now | |
| MD 151 | 1928 | now | labeled in 1933 |
| MD 152 | 1928 | now | |
| MD 153 | 1956 ← 17 (part) |
1983 → 17 (part) |
Cavetown-Myersville |
| MD 153 | 1928 | when? → 24 (part) |
Bel Air-Van Bibber not labeled on maps but listed on http://www.mdroads.com/routes/140-159.html#md153 |
| MD 154 | 1928 | 1954 | east of Fountain Green |
| MD 155 | 1928 | now | |
| MD 156 | 1928? | now | swapped with 155 in 1951-1952 |
| MD 157 | 1991 | now | |
| MD 157 | 1928 | 1955 | Havre de Grace-west |
| MD 158 | 1991 | now | |
| MD 158 | 1928 | 1955 | southwest of Aberdeen |
| MD 159 | 1928 | now | |
| MD 160 | 1930 | 1954 | Darlington-east |
| MD 161 | 1928 | now | |
| MD 162 | 1987 | now | had been part of 167 |
| MD 162 | 1928?? ← US 1 (part) |
1955 | north of Darlington; dam completed in 1928, causing US 1 to be rerouted |
| MD 163 | 1933 | 1954 | northeast of Jarrettsville intended original route typoed as 136? |
| MD 164 | 1933 | 1985? | Charlestown-southwest unlabeled after 1958 original route probably ran north from 165 and became part of 24 |
| MD 164 | 1928 | 1930 → 24 (part) |
Probably north from 165 |
| MD 165 | 1928 | now | labeled in 1933 |
| MD 166 | 1928 | now | |
| MD 167 | 1928 | 1973 | Hammonds Ferry Road, Linthicum disappeared in 1961-1962 (had been only north of 170); reappeared in 1969 (only south of 170; this part is now 162) |
| MD 168 | 1930 | now | |
| MD 169 | 1928 | now | |
| MD 170 | 1928 | now | |
| MD 171 | 1928 | now | |
| MD 172 | 1928 | now | unlabeled |
| MD 173 | 1928 | now | |
| MD 174 | 1928 | now | |
| MD 175 | 1928 | now | |
| MD 176 | 1930 | now | |
| MD 177 | 1928 | now | |
| MD 178 | 1928 | now | labeled in 1935 |
| MD 179 | 1928 | now | |
| MD 180 | 1965 ← US 340 (part) |
now | |
| MD 180 | 1930 | 1940 → 175 (part) | |
| MD 181 | 1928 | now | Bay Ridge Avenue, Annapolis; disappeared in 1983-1985 but returned on only the Spa Creek bridge in 2009 (HLR) |
| MD 182 | 1928 | now | |
| MD 183 | 1928 | 1979 | Randolph Road, Wheaton-Colesville |
| MD 184 | 1928 | 1999 (HLR) | Blair Road, Takoma Park completely missing from 1939 map |
| MD 185 | 1964 | now | unlabeled until 1965 |
| MD 185 | never? | never? | Juniper Street, Takoma Park (not from the 1930s, since Juniper Street isn't shown as a state road on 1930s maps) |
| MD 185 | 1928 | when? → 97 (part) |
Probably south from north of Olney |
| MD 186 | 1928 | now | |
| MD 187 | 1928 | now | |
| MD 188 | 1928 | now | |
| MD 189 | 1928 | now | |
| MD 190 | 1928 | now | |
| MD 191 | 1928 | now | did this continue southeast to Western Avenue (e.g. 1939 map)? |
| MD 192 | 1928 | now | |
| MD 193 | 1928 | now | |
| MD 194 | 1956 ← 71 |
now | |
| MD 194 | 1928 | 1955 → 787 |
Sligo Creek Parkway (NOT Flower Avenue south of Piney Branch Road), Silver Spring |
| MD 195 | 1930 | now | |
| MD 196 | 1930 | 1999 (HLR) | Old Columbia Pike |
| MD 197 | 1928 | now | was Jericho Park Road ever anything other than 197C? 197 crossed the railroad where 564 now does until 1989-1991, but the new bridge was a state road since its construction in 1981-1983 |
| MD 198 | 1928 | now | |
| MD 199 | 1928 | 1953 | east of Lanham now 953 |
| MD 200 | 2005 (HLR) | now | |
| MD 200 | 1928 | 1954 | Larchmont Avenue, Capitol Heights-southwest 1939 map also shows Boones Hill Road; was this a state road? |
| MD 201 | 1928 | now | |
| MD 202 | 1928 | now | |
| MD 203 | 1928 | 1957 | College Avenue, College Park unlabeled on maps, but listed on http://www.mdroads.com/routes/200-219.html#md203 1928-1930 maps also show a loop west of US 1 in this area |
| MD 204 | 1928 | 1954 | Poplar Avenue/Ray Road, Takoma Park |
| MD 205 | 1989 | 1995 → 5 (part) |
east of Waldorf |
| MD 205 | 1928 | 1955 → 201 (part) | |
| MD 206 | 2014 | now | |
| MD 206 | 1928 | 1969? → 208 (part) |
Rhode Island Avenue/38th Street, Hyattsville |
| MD 207 | 1928 | when? | Pennwood Road/Cottage Terrace, Hyattsville unlabeled on maps, but listed on http://www.mdroads.com/routes/200-219.html#md207 |
| MD 208 | 1928 | now | Hyattsville |
| MD 209 | 1928 | 1940 → 410 (part) |
Ager Road/Hamilton Street, Hyattsville |
| MD 210 | 1949 | now | |
| MD 210 | 1928 | 1940 → 500 (part) |
Hyattsville |
| MD 211 | 1928 | 1995 | Sargent Road, Chillum |
| MD 212 | 1928 | now | |
| MD 213 | 1972 ← US 213, 280 |
now | |
| MD 214 | 1928 | now | labeled in 1938 what was old 214 on Pike Ridge Road southwest of Parole? |
| MD 215 | 1928 | 1955 | Elkridge-west |
| MD 216 | 1928 | now | |
| MD 217 | 1928 | 1955 | east of Jonestown |
| MD 218 | 1928 | now | |
| MD 219 | when? | now | spur from US 219 existed by 1978 |
| MD 221 | 1928 | now | Ritchie-Marlboro Road; disappeared in 1954-1955, but returned at the I-495 interchange in 2003 (HLR) |
| MD 222 | 1995 ← US 222 (part) |
now | |
| MD 223 | 1928 | now | |
| MD 224 | 1928 | now | labeled in 1933 |
| MD 225 | 1928 | now | |
| MD 226 | 1928 | 1955 → 227 (part) | |
| MD 227 | 1928 | now | |
| MD 228 | 1928 | now | |
| MD 229 | 1995 ← 228 (part) |
now | |
| MD 229 | 1928 | 1955 | Wayside-Morgantown |
| MD 230 | 1928 | 1955 | Newburg-Mount Victoria |
| MD 231 | 1928 | now | |
| MD 232 | 1928 | 1987 | Budds Creek-east of Beantown |
| MD 233 | 1928 | 1955 → 382 (part) |
Waldorf-Aquasco |
| MD 234 | 1928 | now | labeled in 1935 |
| MD 235 | 1928 | now | |
| MD 236 | 1930 | now | |
| MD 237 | 1987 | now | |
| MD 237 | 1928 | 1960 → 234 (part) | |
| MD 238 | 1928 | now | |
| MD 239 | 1928 | now | |
| MD 241 | 1928 | 1955 | Avenue-Abell |
| MD 242 | 1928 | now | |
| MD 243 | 1928 | now | |
| MD 244 | 1928 | now | |
| MD 245 | 1928 | now | |
| MD 246 | 1928 | now | |
| MD 247 | 1946 | now | |
| MD 247 | 1928 | 1930? → 235 (part) |
never labeled; probably assigned to the bit of 235 east of 246 |
| MD 248 | 1928 | 1940 | northeast of Jarboesville |
| MD 249 | 1928 | now | what was old 249 in Tall Timbers (e.g. 1961 map)? |
| MD 250 | 1950 | now | formerly US 13 |
| MD 250 | 1928 | 1940 → 244 (part) |
Valley Lee-northwest |
| MD 251 | 1937 | 1977 | 58th Avenue, Berwyn Heights not labeled on maps but listed on http://www.mdroads.com/routes/240-259.html#md251 |
| MD 251 | 1928 | 1940 → 244 (part) |
Valley Lee-Drayden |
| MD 252 | 1928 | 1981 | Ridge-Wynne |
| MD 253 | 1928 | now | |
| MD 254 | 1958 ← 533 |
now | |
| MD 254 | 1928 | 1933? → 214 (part) |
Davidsonville-east; never labeled; listed in 1931-34 report |
| MD 255 | 1928 | now | |
| MD 256 | 1928 | now | |
| MD 257 | 1957 ← 3 (part) | now | |
| MD 257 | 1928 | 1939 → 256 (part) |
not labeled on maps; http://www.mdroads.com/routes/240-259.html#md257 says it was west from Deale and that makes sense in the clustering |
| MD 258 | 1928 | now | |
| MD 259 | 1928 | now | |
| MD 260 | 1928 | now | labeled in 1933 |
| MD 261 | 1930 | now | |
| MD 262 | 1928 | now | |
| MD 263 | 1928 | now | |
| MD 264 | 1928 | now | |
| MD 265 | 1930 | now | |
| MD 266 | 1928 | 1956 | Lusby-southwest |
| MD 267 | 1928 | now | |
| MD 268 | when? | now | existed by 1978 |
| MD 268 | 1928 | 1936 → US 222 (part) |
Perryville-Conowingo; never labeled; listed in 1931-34 report |
| MD 269 | 1928 | 1983 | Port Deposit-Rising Sun |
| MD 270 | 1933 | now | not the original 270 (doesn't fit the clustering) what was added in 1930 to the west of 270? |
| MD 270 | 1928 | when? →276 (part) |
Port Deposit |
| MD 271 | 1930? | 1946? | Perryville |
| MD 272 | 1928 | now | |
| MD 273 | 1928 | now | labeled in 1933 |
| MD 274 | 1928 | now | |
| MD 275 | 1966 | now | |
| MD 275 | never? | never? | old US 213 (?) south of Chestertown, 1930 (per bridge) |
| MD 275 | 1928 | 1928 → 269 (part) |
East from Colora |
| MD 276 | 1928 | now | |
| MD 277 | 1928 | now | |
| MD 278 | 1928 | 1940 → 896 | |
| MD 279 | 1928 | now | |
| MD 280 | 1928 | 1971 → 213 (part) | |
| MD 281 | 1933 | now | missing in 1939 not the original 281? |
| MD 282 | 1928 | now | |
| MD 283 | 1928 | 1958 → 282 (part) |
simply an extension of 282 until the rest of 282 was added by 1930 |
| MD 284 | 1928? | now | |
| MD 285 | 1930 | now | |
| MD 286 | 1930 | now | |
| MD 287 | 1933 | now | probably not the original 287 (doesn't quite fit the clustering) |
| MD 288 | 1928 | now | |
| MD 289 | 1928 | now | |
| MD 290 | 1928 | now | |
| MD 291 | 1930 | now | |
| MD 292 | 1928 | now | |
| MD 293 | 1930? | 1949? | Betterton |
| MD 294 | 1930? | 1946? | Betterton |
| MD 295 | 1977 | now | |
| MD 295 | 1930? | 1946? | Betterton |
| MD 296 | 1930? | 1946? | Betterton |
| MD 297 | 1928 | now | |
| MD 298 | 1930 | now | |
| MD 299 | 1930 | now | |
| MD 300 | 1928 | now | labeled in 1933 |
| MD 301 | 1928 | 1939 → 290 (part) |
south of 544 |
| MD 302 | 1928 | now | |
| MD 303 | 1960 ← 309 (part) |
now | |
| MD 303 | 1928 | 1954 → 309 (part) | |
| MD 304 | 1928 | now | |
| MD 305 | 1928 | now | |
| MD 306 | 1928 | now | |
| MD 307 | 1928 | now | |
| MD 308 | 1928? | now | unlabeled |
| MD 309 | 1928 | now | |
| MD 310 | 1928 | now | doesn't quite fit the clustering |
| MD 311 | 1928 | now | |
| MD 312 | 1928 | now | |
| MD 313 | 1927 | now | |
| MD 314 | 1928 | now | |
| MD 315 | 1964 ← 318 (part) |
now | |
| MD 315 | 1928 | 1949 → 314 (part) | |
| MD 316 | 1928 | now | may not be the original 316 (doesn't fit the clustering); Bush to Graceton Road, Harford County (shown on a 1937 map) according to http://www.mdroads.com/routes/mdroutes.txt was probably 136 |
| MD 317 | 1928 | now | |
| MD 318 | 1928 | now | |
| MD 319 | 1928 | 1955 → 318 (part) | |
| MD 320 | 1928 | now | probably not the original 320 (doesn't fit the clustering) |
| MD 321 | 1928? | 1946 | doesn't fit the clustering |
| MD 322 | 1966 | now | |
| MD 322 | 1952 | 1953 → 313 (part) |
Andersontown-south |
| MD 322 | 1928? | 1946 | doesn't fit the clustering |
| MD 323 | 1928? | 1946 | doesn't fit the clustering |
| MD 324 | 1928 | now | |
| MD 325 | 1930 | 1977 | Catonsville-south doesn't fit the clustering |
| MD 326 | 1933 | when? | Leonardtown still existed in 1985 doesn't fit the clustering |
| MD 327 | when? | now | bridge is from 1942 (rebuilt 1968) |
| MD 327 | 1930 | 1955 | northwest of La Plata doesn't fit the clustering |
| MD 328 | 1928 | now | |
| MD 329 | 1928 | now | why is this state aid on some 1930s maps? |
| MD 330 | 1989 | now | |
| MD 330 | 1928? | 1985? | Kingsville probably not the original 330 (doesn't fit the clustering) |
| MD 331 | 1939 ← US 213 (part) |
now | |
| MD 331 | 1928 | 1938 → US 213 (part) |
Easton-Cambridge; never labeled; listed in 1931-34 report |
| MD 332 | 1969 ← 214 (part) |
now | |
| MD 332 | 1928? | when? | Easton not on maps but listed on http://www.mdroads.com/routes/320-339.html#md332 |
| MD 333 | 1928 | now | |
| MD 334 | 1928 | now | |
| MD 335 | 1928 | now | |
| MD 336 | 1928 | now | |
| MD 337 | 1928 | now | doesn't fit the clustering |
| MD 338 | 1928 | 1979 | east of Conowingo doesn't fit the clustering |
| MD 339 | 1978? | 1999 | Sligo Avenue, Silver Spring; formerly part of 320 not labeled on maps but listed on http://www.mdroads.com/routes/320-339.html#md339 |
| MD 339 | 1928? | 1953? | old 331 (?) south of Hurlock |
| MD 341 | 1928 | 1930 → 16 (part) |
Probably west from Cumberland |
| MD 341 | 1966 ← 16 (part) |
now | |
| MD 341 | 1928? | 1965? | old 14 (?) west of Brookview |
| MD 341 | 1928 | 1930 → US 213 (part) |
Probably Vienna-Rhodesdale |
| MD 342 | 1939* ← 310 (part) |
now | |
| MD 342 | 1928 | 1938 → 14 (part) |
16 to 14 west of Secretary |
| MD 343 | 1928 | now | |
| MD 344 | 1957 ← 6 (part) |
now | had been part of 224 until 1955-1956 |
| MD 344 | 1928 | 1938 → US 213 (part) |
Vienna-Cambridge; labeled in 1935 (probably initially continued east to Mardela Springs) |
| MD 345 | 1946 | 1953 | southeast of Redhouse |
| MD 346 | 1928 | now | originally only in Salisbury (see 1950 inset); temporarily disappeared after 1953 |
| MD 347 | 1928 | now | |
| MD 348 | 1930 | now | |
| MD 349 | 1928 | now | |
| MD 350 | 1928 | now | |
| MD 351 | 1989 ← 180 (part) |
now | |
| MD 351 | 1928 | 1955 | Fruitland-southeast |
| MD 352 | 1928 | now | |
| MD 353 | 1928 | now | |
| MD 354 | 1928 | now | |
| MD 355 | 1955 ← US 240A |
now | |
| MD 355 | 1928 | 1953 | loop in Crisfield |
| MD 356 | 1928 | 1953 | Kingston-east |
| MD 357 | 1928 | 1989 | Marion-northwest, Marion-southeast |
| MD 358 | 1928? | now | originally only southeast of Crisfield |
| MD 359 | 1974? ← US 113 (part) |
now | |
| MD 359 | 1928? | 1949? | southeast of Crisfield |
| MD 360 | 1928? | 1953 | southeast of Crisfield |
| MD 361 | 1928 | now | |
| MD 362 | 1930 | now | |
| MD 363 | 1928 | now | |
| MD 364 | 1928 | now | |
| MD 365 | 1928 | now | |
| MD 366 | 1928 | now | |
| MD 367 | 1928 | now | |
| MD 368 | 1928 | now | |
| MD 369 | 1928 | 1955 | Newark-east |
| MD 370 | 1933 | now | doesn't fit the clustering |
| MD 370 | 1928 | 1930 → 354 (part) |
Probably north from Snow Hill |
| MD 371 | 1928 | now | |
| MD 372 | 1928 | now | doesn't fit the clustering |
| MD 373 | 1955 | now | where was 373 originally? |
| MD 374 | 1930 | now | |
| MD 375 | 1928? | now | may have originally followed West Street to Evans Road |
| MD 376 | 1928 | now | |
| MD 377 | 1928?? | now | existed by 1937, but this may have been part of US 213 in 1928-1930 |
| MD 378 | 1928? | now | |
| MD 379 | 1939 | 1949? | Leonardtown was there an earlier 379? |
| MD 380 | 1930? | now | |
| MD 381 | 1928 | now | doesn't fit the clustering |
| MD 382 | 1928 | now | doesn't fit the clustering |
| MD 383 | 1930 | now | |
| MD 384 | 1930 | now | |
| MD 385 | 1949 | 1963 → 352 (part) |
northwest of Whitehaven |
| MD 385 | 1928 | 1940 | northeast of Federalsburg doesn't fit the clustering |
| MD 386 | 1930 | 1972 | Severna Park-west |
| MD 387 | 1930 | now | |
| MD 388 | 1930 | now | |
| MD 389 | 1930 | 1954 | Addison Road, Seat Pleasant-southeast |
| MD 390 | 1960 ← 653? |
now | where was this originally? |
| MD 391 | 1930 | 1999 (HLR) | Seminary Road/Dale Drive, Silver Spring |
| MD 392 | 1930 | now | |
| MD 393 | 1954 ← 2 (part) |
now | |
| MD 393 | 1930 | 1948 → 255 (part) |
Galesville-west |
| MD 394 | 1975? ← US 113 (part) |
1995 → US 113B |
Snow Hill |
| MD 394 | 1940 | 1953 | Gortner-east |
| MD 394 | 1930 | 1939 →302 (part) |
302 through Templeville |
| MD 395 | 1930 ← US 220 (part)??? |
1981 → US 220 (part) |
Naves Cross Road, northeast of Cumberland last labeled in 1953, but still shown as a state road afterwards |
| MD 396 | 1933 | now | |
| MD 397 | 1930 | 1972 | Cambridge-Airey |
| MD 398 | 1930 | 1956 → 63 (part) | |
| MD 399 | 1933 | 1973 | Damascus-east |
| MD 400 | 1930 | 1989 | south of Owings Mills |
| MD 401 | 1933 | 1985 | Butler-northeast |
| MD 402 | 1933 | now | |
| MD 403 | 1950?? | 1955? → 410 (part) |
Riverdale unlabeled on maps, but listed on http://www.mdroads.com/routes/400-419.html#md403 (along with a commercial map scan) |
| MD 403 | 1930? | 1950? | Level Village Road, Aldino? unlabeled on maps, but listed on http://www.mdroads.com/routes/400-419.html#md403 |
| MD 404 | 1930 | now | labeled in 1933 |
| MD 405 | 1930 | now | |
| MD 406 | 1930? | 1960 → 667 (part) |
shown southeast from Harold in 1930 |
| MD 407 | 1933 | now | |
| MD 408 | 1965 ← 4 (part) |
now | |
| MD 408 | 1930 | 1951 → 24 (part) |
Van Bibber-Edgewood |
| MD 409 | 1930 | 1989 | Maryland Line-Freeland |
| MD 410 | 1930 | now | labeled in 1933 |
| MD 411 | 1930 | 1940 → US 1 (part) |
Rhode Island Avenue labeled in 1933 |
| MD 412 | 1930 | 1989 | Queensbury Road/Riverdale Road, Hyattsville |
| MD 413 | 1927 | now | |
| MD 414 | 1930 | now | |
| MD 415 | 1930 | 1955 | Scotland-east |
| MD 416 | 1930 | 1964 → 4 (part) |
labeled in 1933 |
| MD 417 | 1930 | 1962 → 669 |
labeled in 1935 |
| MD 418 | 1930 | now | |
| MD 419 | 1930 | 1958 | Dickerson-northeast, Dickerson-southwest |
| MD 420 | 1930 | 1973 | Brink Road/Sundown Road, Goshen-Laytonsville |
| MD 421 | 1930 | 1958 | Travilah Road, west of Rockville |
| MD 422 | 1930 | now | |
| MD 423 | 1930 | now | |
| MD 424 | 1930 | now | |
| MD 425 | 1930 | now | |
| MD 426 | 1933 | 1955 | Nanjemoy-west |
| MD 427 | 1933 | 1987 | west of Bel Alton |
| MD 428 | 1933 | 1955 | Dentsville-south |
| MD 429 | 1930 | 1955 | Faulkner-south |
| MD 430 | 1933? | now | not sure if 430, 434, or both were added in 1933 |
| MD 431 | 2019 | now | |
| MD 431 | 1933 | 1955 | Drayden-south |
| MD 432 | 1971?? ← 32 (part) |
now | |
| MD 432 | 1930 | 1958 | south of Damascus |
| MD 433 | 2019 | now | |
| MD 433 | 1951 | 1957 | Federalsburg-Smithville |
| MD 433 | 1933 | 1940 → 212 (part) |
Beltsville part of 212 in 1939* |
| MD 434 | 1933? | 1989 | Berwyn Road/Pontiac Street, Greenbelt unlabeled until 1946 |
| MD 435 | 1930 | now | |
| MD 436 | 1930 | now | |
| MD 437 | 1930 | 1974 | Annapolis weird swapping with 435-436-438 in 1953-1954? only on maps beginning in 1956 |
| MD 438 | 1930 | 1974 | Annapolis weird swapping with 435-436-437 in 1953-1954 |
| MD 439 | 1933 | now | |
| MD 440 | 1933 | now | |
| MD 441 | 1938 | 1958 | Providence-east unlabeled until 1946 was there an earlier 441? |
| MD 442 | 1933 | 1987 | south of Betterton did this include the south end of Rosedale Cannery Road (seems to be old 566, bypassed 1960-1961)? |
| MD 443 | 1933 | 1987 | south of Betterton |
| MD 444 | 1933 | now | |
| MD 445 | 1930 | now | |
| MD 446 | 1930 | now | |
| MD 447 | when? ← 444 (part) |
1987 | Locust Grove bypassed in 1956 and shown as a state road in 1961, but the older 447 still existed then |
| MD 447 | 1930 | 1962 → 291 (part) | |
| MD 448 | 1930 | 1987 | Kennedyville-south, Kennedyville-north |
| MD 449 | 1956?? 1987?? | now | |
| MD 449 | 1934? | 1958 | Perryville did this also include current 222 south of US 40? |
| MD 450 | 1954 ← US 50 (part) |
now | |
| MD 450 | 1933 | 1938? → 16 (part) |
southeast of Denton; never labeled but listed on http://www.mdroads.com/routes/440-459.html#md450 |
| MD 451 | 1933 | 1997 | swapped with 33 in 1956-1957 |
| MD 452 | 1930 | now | |
| MD 453 | 1933 | 1955 | Woodmont Road, west of Hancock |
| MD 454 | 1933 | now | |
| MD 455 | 1939 | 1968 → 54 (part) |
was there an earlier 455? |
| MD 456 | 1933 | now | |
| MD 457 | 1951 | 1957 | Greensboro-Burrsville |
| MD 457 | 1933 | 1946 → 328 (part) | |
| MD 458 | 1933 | now | |
| MD 459 | 1933 | now | |
| MD 460 | 1933?? | now | |
| MD 461 | 1933 | 1950 | old US 1 southwest of Bel Air, 1930 (per bridge) |
| MD 462 | 1933 | now | |
| MD 463 | 1933 | 1998 | old US 111 at Parkton, 1930 (per bridge) |
| MD 464 | 1933 | now | |
| MD 465 | 1933 | 1968 | Crownsville-east |
| MD 466 | 1972 ← 166 (part) |
1977 | what's the Halethorpe-west (Clarke Boulevard/Cedar Avenue?) that appears in 1933? if this wasn't 466, where was it originally? |
| MD 467 | 1939* | 1968 → 54 (part) |
was there an earlier 467? |
| MD 468 | 1933 | now | |
| MD 469 | 1933 | 1955 | Port Tobacco-south |
| MD 470 | 1933 | now | |
| MD 471 | 1933 | now | |
| MD 472 | 1933 | now | |
| MD 473 | 1933 | 1958 | Fairview-south |
| MD 474 | 1933? 1936? | 1957 | Denton-Hobbs |
| MD 475 | 2001 (HLR) | 2009 (HLR) | East Street, Frederick |
| MD 475 | 1950? ← US 13 (part) |
1953 → 663 (part) |
Division Street, Salisbury |
| MD 475 | 1933? | 1940 → 358 (part) |
northeast of Crisfield |
| MD 476 | 1933 | 1949? | east of Lisbon |
| MD 477 | 1931 ← US 1 (part) |
1983 | Elkridge-southwest was Montgomery Road northwest to US 1 a state road? |
| MD 478 | 1968? ← 464 (part) |
now | |
| MD 478 | 1931 | when? | Old US 40, Washington County |
| MD 479 | 1935 | 1999 (HLR) | east of Cambridge |
| MD 480 | 1933 | now | |
| MD 481 | 1933 | now | |
| MD 482 | 1933 | now | |
| MD 483 | 1931 (per bridge) ← 174 (part) |
1940? | Severn |
| MD 484 | 1933 | 1987 | Marbury-Port Tobacco |
| MD 485 | when? ← 404 (part) |
now | |
| MD 485 | 1933 | when? | Middle Street, Vienna |
| MD 486 | 1933 | when? | spur from MD 331 to US 50, Vienna |
| MD 487 | 1933 | when? | Race Street, Vienna |
| MD 488 | 1933 | now | |
| MD 489 | 1956 | now | |
| MD 489 | 1934? | 1949? | Whiteleysburg-southeast |
| MD 490 | 1933 | now | |
| MD 491 | 1957 | now | |
| MD 491 | 1933 | 1955 → 425 (part) | |
| MD 492 | 1933 | 1953 | Maryland Park Drive, Maryland Park |
| MD 493 | 1933 | 1940 | portion renumbered 700 |
| MD 494 | 1933 | now | |
| MD 495 | 1933 | now | |
| MD 496 | 1933 | now | |
| MD 497 | 1933 | now | |
| MD 498 | 1933 | 1981 | Piney Point-southwest |
| MD 499 | 1933 | 1955 | south of Chaptico |
| MD 500 | 1933 | now | |
| MD 501 | 1933 | now | |
| MD 502 | 1946 | 1959 | southeast of Stockton original 502 was probably northwest from Great Mills (became part of 471 by 1939) |
| MD 503 | 1933 | 1956 | Appeal-Olivet now partly 760 |
| MD 504 | 1933 | 1956 | Appeal-Dowell |
| MD 505 | 1933 | 1956 | Appeal-west |
| MD 506 | 1933 | now | |
| MD 507 | 1933 | 1956 | Stoakley-west |
| MD 508 | 1933 | now | |
| MD 509 | 1933 | now | |
| MD 510 | 1933 | 1956 | west of Sunderland |
| MD 511 | 1933 | 1956 | Island Creek-south |
| MD 512 | 1933 | 1956 | Island Creek-west |
| MD 513 | 1987 | now | |
| MD 513 | 1933 | 1954 → 320 (part) |
Piney Branch Road, Takoma Park shown as part of 320 in 1946, but back to 513 in 1948 |
| MD 514 | 1951 | now | |
| MD 514 | 1933 | 1939 | Park Valley Road, Silver Spring (shown in 1933) |
| MD 515 | 1933 | 1959 | Silver Spring |
| MD 516 | 1933 | 1999 (HLR) | Franklin Avenue, Silver Spring |
| MD 517 | 1933 | 1955 → 136 (part) | |
| MD 518 | 1933 | now | Shows on a 1937 map |
| MD 519 | 1933 | 1978 | Glyndon-east |
| MD 520 | 1933 | now | |
| MD 521 | 1933 | now | |
| MD 523 | 1933 | 1956 | Chaneyville-west |
| MD 524 | 1969 ← 2 (part) |
now | unlabeled |
| MD 524 | 1933 | 1956 | southwest of Owings |
| MD 525 | 1933 | 1956 | Dunkirk-west |
| MD 526 | 2014 | now | |
| MD 526 | 1954?? ← US 140 (part) |
when? | still existed in 1985 |
| MD 526 | 1933 | when? → 545 (part) |
280 to 545, Elkton |
| MD 527 | 1933 | when? | old US 1, Elkridge |
| MD 528 | 1939 | now | existed by 1937, but it blends in with 378 on state maps |
| MD 529 | 1933 ← US 13 (part) |
now | |
| MD 530 | 1939* | when? | Chestertown probably existed earlier |
| MD 531 | 1946 | 1958 | east of Eldorado |
| MD 531 | 1933 | 1940 → 175 (part) |
Waterloo-Jonestown now mostly 108 |
| MD 532 | 1933 | 1955 | Mount Airy-east |
| MD 533 | 1933 | 1957 → 254 |
Cobb Island-north |
| MD 534 | 1933 ← 221 (part)? |
1954 | Forestville-northeast |
| MD 535 | 2001 (HLR) | now | connects I-495 and 5 |
| MD 535 | 1933 | when? | old 14, Brookview, 1931 (per bridge) |
| MD 536 | 1933 | 1955 | southwest of Port Tobacco |
| MD 537 | 1948 (per bridge) ← 213 (part) |
now | |
| MD 537 | 1933? | 1940 → 135 (part), 495 (part) | |
| MD 539 | 1956 | 1959 → 108 (part) |
Columbia-Jonestown where was 539 originally? |
| MD 540 | 1933 | Chestnut Avenue (old 513?), Takoma Park | |
| MD 541 | 1933 | 1955 | Tyaskin-south |
| MD 542 | 1933 | now | |
| MD 543 | 1933 | now | |
| MD 544 | 1933 | now | |
| MD 545 | 1933 | now | |
| MD 546 | 1933 | now | |
| MD 547 | 1933 | now | |
| MD 548 | 1933 | 1955 | Allen-northwest |
| MD 549 | 1933 | 1954 | Silesia-south |
| MD 550 | 1933 | now | |
| MD 551 | 1928?? | 1955 → 343 (part) |
Washington Street, Cambridge |
| MD 552 | 1933 | now | |
| MD 553 | 1933?? ← 2 (part) |
now | what was old 2 just north of 423? (e.g. 1961 map) |
| MD 554 | 1933 | 1981 → 174 (part) |
Reece Road, Severn swapped with 170 in 1940-1946 |
| MD 555 | 1933 | 1956 | Plum Point-south |
| MD 556 | 1933 | 1983 → 193 (part) | |
| MD 557 | 1933 | when? | Brookes Ave, Gaithersburg |
| MD 558 | 1933 | 1955 | Bel Alton-Newtown |
| MD 559 | 1933 | 1955 | Westminster-east |
| MD 560 | 1933 | now | |
| MD 561 | 1933 | now | |
| MD 562 | 1933 | now | |
| MD 563 | 1933 | 1955 → 224 (part) | |
| MD 564 | 1934 | now | |
| MD 565 | 1939* ← 331 (part) |
now | unlabeled until 1946 |
| MD 566 | 1949 | now | Probably originally Trappe-Barber (bypassed by 1935) |
| MD 567 | 1935 | 1997 | Cromwell Bridge Road, east of Towson |
| MD 568 | 1935 | now | swapped with 367/368 |
| MD 569 | 1935 | 1955 | north of Westminster |
| MD 570 | 1935 | 1953 → 97 (part)? |
may have disappeared at first; not labeled as 97 until 1956 |
| MD 571 | 1935 | 1949 | northwest of Emmitsburg |
| MD 572 | 1935 | 1955 | Gapland-northeast |
| MD 573 | 1935 | 1953 | Eldersburg-northwest |
| MD 574 | 1934 | 1981 | southeast of Hollywood |
| MD 575 | 2000 (HLR) ← US 113 (part) |
now | |
| MD 575 | 1934 | 1956 | north of Huntingtown |
| MD 576 | 1935 | 1953 | south of Pocomoke City |
| MD 577 | 1934 | now | |
| MD 578 | 1935 | now | |
| MD 579 | 1934 | now | |
| MD 580 | 1946 | 1949 | north of Pocomoke City; old 364? probably existed earlier |
| MD 581 | 1935 | 1953 | Keymar-northwest |
| MD 582 | 1935 | 1955 | east of Laytonsville |
| MD 583 | 1935 | 1949 | southeast of Florence |
| MD 584 | 1939 ← 5 (part)? |
now | probably existed earlier |
| MD 585 | 1935 | 1955 | southeast of Salisbury |
| MD 586 | 1935 | now | |
| MD 587 | 1934 | now | |
| MD 588 | 1934 | now | |
| MD 589 | 1935 | now | |
| MD 590 | 1935 ← US 1 (part) |
1953 | new bridge built 1934 |
| MD 591 | 1933 (per bridge) ← US 1 (part) |
now | not on maps |
| MD 592 | 1935? ← US 1 (part) |
1949? | east of Rising Sun |
| MD 593 | 1939 | 1958 | Brunett Avenue, Silver Spring probably existed earlier |
| MD 594 | 2016 | now | includes part of the former one |
| MD 594 | 1939 | 1958 | Wayne Avenue, Silver Spring probably existed earlier |
| MD 595 | 1939 | 1958 | Bonifant Street, Silver Spring probably existed earlier |
| MD 596 | 1939 | 1958 | Maple Avenue, Silver Spring probably existed earlier |
| MD 597 | 1939 | 1940 → 192 (part) |
Forest Glen Road, Silver Spring probably existed earlier |
| MD 598 | 1934 ← US 13 (part) |
1953 | Westover-Princess Anne |
| MD 599 | 1946? ← 493 (part) |
1949?? | Middle River not on maps, but shown on http://www.mdroads.com/routes/580-599.html#md599 |
| MD 600 | 1946 ← 150 (part) |
1949? | Middle River |
| MD 601 | 1946? | 1949?? | Middle River not on maps, but shown on http://www.mdroads.com/routes/600-619.html#md601 |
| MD 602 | 1946 ← 216 (part) |
1962 → 198 (part) | |
| MD 603 | 1935 | 1939 | Sundale Drive?? north from 410 west of 390 |
| MD 604 | 1935 | 1955 | south of Damascus |
| MD 605 | 1935 | 2005 | Takoma Avenue, Takoma Park completely missing from maps after 1935, but listed on http://www.mdroads.com/routes/600-619.html#md605 and on commercial map scan at http://www.mdroads.com/routes/180-199.html#md184 |
| MD 606 | 1935 | 1950 → 304 (part) | |
| MD 607 | 1936 | now | |
| MD 608 | 1935 | 1953 | Sykesville-east |
| MD 609 | 1935 | 1979 → 28 (part) |
Norbeck-east |
| MD 610 | 1935 | now | |
| MD 611 | 1935 | now | |
| MD 612 | 1935 | 1953 | Taneytown-north |
| MD 613 | 1936 | 1960? → 261 (part) | |
| MD 614 | 1935 | now | |
| MD 615 | 1936 | now | |
| MD 616 | 1938 | 1953 | Broadfording Road, south of Cearfoss |
| MD 617 | when? ← 16 (part) |
now | |
| MD 617 | 1936 | 1957 | American Corner-south missing in 1939 but on 1937 county map; blank shield in 1940 |
| MD 618 | 1936 | 1955 | west of Keymar |
| MD 619 | when? ← 313-404 (part) |
now | no Denton inset until 1978, at which time it existed (and is labeled) |
| MD 619 | 1938 | 1953 | Union Bridge-southeast |
| MD 620 | 1938 | 1955 | Taneytown-south |
| MD 621 | 1936 | 1989 | American Corner-west unlabeled in 1939; blank shield in 1940 |
| MD 622 | 1938 | 1956 | southwest of Westminster |
| MD 623 | 1938 | now | |
| MD 624 | 1938 | now | |
| MD 625 | 2006 (HLR) ← 5 (part) |
now | signed as 5B |
| MD 625 | 1939 | 1955 | Sabillasville-north |
| MD 626 | 1939 | 1949? | west of Ocean City |
| MD 627 | 1938 | now | |
| MD 628 | 1938 | 1955 | Rice Road/Resley Road, west of Hancock |
| MD 629 | 1938 | 1955 | Exline Road, west of Hancock |
| MD 630 | 1954 ← 313 (part) |
1957 | Bureau-Federalsburg |
| MD 630 | 1939 | 1950 → 84 (part) |
Uniontown-northeast |
| MD 631 | 1950 (per bridge) ← 5 (part) |
now | where was 631 originally? |
| MD 632 | 1938 | now | |
| MD 633 | 1938 | 1950s | 16 east via Auction Road |
| MD 634 | 1938 | 1951 → 543 (part) | |
| MD 635 | 1938 | 1949? | east of Aberdeen |
| MD 636 | 1938 | now | |
| MD 637 | 1939 | now | swapped with 5 in 1949-1950 |
| MD 638 | 1938 | now | |
| MD 639 | 1970 | now | |
| MD 639 | 1950 | 1953 | Kearney-northwest did this exist earlier? |
| MD 640 | 1991 | now | |
| MD 640 | 1938 | 1955 | Urbana-south |
| MD 641 | 1938 | 1955 | west of Union Bridge |
| MD 642 | 1947 (per bridge) ← 173 (part) |
now | was there an earlier 642? |
| MD 644 | 1947? | now | removed for a while but returned in 2012 (HLR) |
| MD 645 | when? ← 176 (part) |
now | new bridge is from 1936, a little early for the number 645 |
| MD 646 | 1938 | now | swapped with 543 in 1940-1946 |
| MD 647 | 1939?? | 1949? | southeast of Savage |
| MD 648 | 1939 ← 2 (part) |
now | |
| MD 650 | 1935 | now | |
| MD 651 | 1939 | 1953 | northeast of Jarrettsville |
| MD 652 | 1948? ← 170 (part) |
now | not shown until expanded 1950 inset |
| MD 652 | 1939 | 1940 | Piney Grove-north |
| MD 653 | 1935 | 1959? → 390 (part) |
16th Street, Silver Spring not labeled on maps, but listed on http://www.mdroads.com/routes/640-659.html#md653 including a commercial map scan |
| MD 654 | 1939? | 1956 | Frostburg not on maps, but listed on http://www.mdroads.com/routes/640-659.html#md654 |
| MD 655 | 1983? ← 28 (part) |
now | |
| MD 655 | 1939 | 1956 | Midland-west disappears from maps after 1953 |
| MD 656 | when? | now | former US 50, bypassed 1951 (per bridge), but was it then part of 456? |
| MD 656 | 1939? | 1956 | Lonaconing not on maps, but listed on http://www.mdroads.com/routes/640-659.html#md656 |
| MD 657 | 1939 | 2011 (HLR) | Lonaconing-west |
| MD 658 | 1972 | now | was there an earlier 658? |
| MD 659 | 1939 | 1958 | Silver Spring |
| MD 660 | when? | now | |
| MD 661 | 1939 | 1993 | Pomona-Quaker Neck Landing |
| MD 662 | 1948 ← US 213 (part) |
now | |
| MD 662 | 1939 | 1940 → 448 (part) |
Kennedyville-north |
| MD 663 | 1939 | 1955 | Salisbury-south |
| MD 664 | 1946 | 1993 | south of Chestertown was there an earlier 664? |
| MD 665 | 1950 | now | http://www.mdroads.com/routes/mdroutes.txt says original 665 was current US 40 west of Baltimore |
| MD 666 | 1939 ← 193 (part) |
1957 | |
| MD 667 | 1939 ← 413 (part) |
now | |
| MD 668 | 1936 (per bridge) ← 30 (part) |
now | original segment is on this map there may have been a period when no 668 existed |
| MD 669 | 1963 ← 417 |
now | |
| MD 669 | 1939 | 1953 | north of Boonsboro typoed? as a spur of 66 in 1939-1940 |
| MD 670 | 1939 | now | unlabeled in 1940 |
| MD 671 | 1939 | 1955 | Girdletree-Bayview |
| MD 672 | when? | now | |
| MD 673 | 1949 | now | unlabeled at first was there an earlier 673? |
| MD 674 | 1946 | now | originally west from 445; later extended east on former 20 was there an earlier 674? |
| MD 675 | 1954? ← US 13 (part) |
now | part at Delmar may have been US 13A at first, in which case the Princess Anne portion (1959) may be the original |
| MD 676: | 1939 | when? | old 28, Rockville |
| MD 677 | 1938 (per bridge) ← 180 (part) |
2003 (HLR) | Odenton |
| MD 678 | 1939 | 1955 | southwest of Finksburg |
| MD 680 | 1939 | 1956 | north of Woodbine |
| MD 681 | 1939 | 1956 | northwest of Westminster |
| MD 682 | 1939 | 1956 | west of Lineboro unlabeled until 1946 |
| MD 683 | 1939 | 1956 | Westminster-southeast |
| MD 684 | 1956 | 1983 | Broad Branch Road, Chevy Chase did this exist earlier? or was there another 684? |
| MD 685 | 1953 ← US 213 (part) | 1979 | old 213, Hack Point |
| MD 686 | 1946 | 1983 | 2nd Street, Brooklyn Park (still in 2005 Baltimore City HLR) |
| MD 687 | 1946 | 1956 | south of Taylorsville |
| MD 688 | 1939* | 1956 | east of Gaithersburg |
| MD 689 | 1939* | 1955 | old 34, west of Sharpsburg |
| MD 690 | 1939* | 1955 | old US 40, east of Hancock |
| MD 690 | 1957 ← US 1 (part) |
1958 | east of Rising Sun only labeled in 1958 |
| MD 691 | 1939* | 1948 → US 40 Alternate |
now swapped with US 40 |
| MD 692 | 1939* | 1956 | Allegany County |
| MD 693 | 1950 ← 5 (part) |
1955 | south of Beantown, east of Bryantown |
| MD 694 | 1937? (per bridge) | now | |
| MD 695 | 1973 | now | |
| MD 695 | 1940 | 1954 | Addison Road, Cheverly |
| MD 696 | 1946 | 1953 | east of Princess Anne |
| MD 697 | 1946 | 1953 | north of Westover |
| MD 697 | 1969 ←274 (part) |
1979 | old 274, Bay View |
| MD 698 | 1940 | 1985 | Mill Street, Chestertown |
| MD 699 | 1941 ←272 (part) |
1979 | old 272, Cecil County |
| MD 700 | 1946 ←493 (part) |
now | |
| MD 701 | 1956? | now | |
| MD 701 | 1939* | 1951 → 420 (part) |
Laytonsville-east |
| MD 702 | 1973 | now | |
| MD 702 | 1946 | 1957 | Bethesda |
| MD 703 | when? ← 366 (part) |
now | |
| MD 703 | 1946 | 1954 | southeast of Bowie |
| MD 704 | 1946 | now | |
| MD 705 | 1939* | 1954 | Croom-east |
| MD 706 | 1946 | 1970 → 648 (part) |
southeast of Glen Burnie at 100 |
| MD 707 | 1946? ← US 213 (part) |
now | unlabeled until 1948 |
| MD 709 | 1939* | 1955 | Green Ridge Road, west of Piney Grove |
| MD 710 | 1946 | now | |
| MD 711 | 1972? ← 710 (part) |
now | |
| MD 711 | 1939* | 1949? | north of Elkton |
| MD 712 | 1946 | now | |
| MD 713 | 1946 ← 175 (part) |
now | |
| MD 714 | 1946 ← 4 (part) |
1981 | southeast of Forestville |
| MD 715 | 1946 ← 21 (part)? |
now | |
| MD 717 | 1962? | now | unlabeled |
| MD 718 | 1946 ← 151 (part) |
1997 | Sparrows Point |
| MD 722 | 1946 ← 235 (part) |
1949? | west of Turner, through Hollywood |
| MD 723 | 1942 (per bridge) ← 175 (part) |
now | |
| MD 725 | 1962 ← 4 (part) |
now | unlabeled at first was there an earlier 725? |
| MD 726 | 1959 (per bridge) | now | |
| MD 727 | 1949 ← 268 (part) |
now | |
| MD 731 | 1990 (per bridge) ← US 50 (part) |
now | |
| MD 732 | 1987 ← 32 (part) |
now | |
| MD 733 | when? | now | new bridge is from 1932, a bit early for the number |
| MD 735 | when? | now | |
| MD 736 | 1998 (TVM) | now | |
| MD 739 | 2015 | now | |
| MD 740 | 2015 | now | |
| MD 741 | when? ← US 40A (part) |
now | |
| MD 742 | 1975 ← 42 (part) |
now | |
| MD 743 | when? ← US 40 (part) |
now | |
| MD 744 | 1950? | 1955 | Dorchester Avenue, Cambridge |
| MD 746 | 1992?? (per bridge) ← 25 (part) |
now | |
| MD 750 | when? ← US 50 (part) |
now | |
| MD 750 | 1950 | 1951 | old 2 north from Prince Frederick, bypassed in 1940-1946 |
| MD 751 | 1955 | 1955 → 260 (part) | |
| MD 752 | 1952 (per bridge) ← 231 (part) |
now | |
| MD 753 | 1946 | 1977 | Pylesville-Street |
| MD 754 | 1946 ← 646 (part)? |
1977 | Street-east |
| MD 755 | 1967 ← 24 (part) |
now | |
| MD 755 | when? | when? | in Laurel |
| MD 756 | 1946 → US 113 (part) |
now | unlabeled in 1939-1940 |
| MD 757 | 1946 | 1949 → 673 (part) |
former 413 east from Westover unlabeled in 1934-1940 (was it part of 598?) |
| MD 758 | 2012 (HLR) | now | |
| MD 759 | 1952 8 (part)? |
now | current 759B was definitely part of 8, and was created when the CBB opened and 8 was realigned a bit to the east to cross US 50-301 at grade but were other parts ex-18? |
| MD 760 | 1962 | now | north part had been 503 until 1956-1957 |
| MD 761 | when? ← 263 (part) |
now | |
| MD 761 | 1950 ← US 301 (part) |
1953 | unlabeled until 1952 |
| MD 762 | 1989 ← 162 (part) |
now | where was 762 originally? |
| MD 763 | when? ← 155 (part)? |
now | existed by 1978; appears to have been part of 155 by 1933 Hatem Bridge opened in 1940, probably too early for the number to come directly 155 if it was rerouted then |
| MD 764 | when? ← 261 (part) |
now | |
| MD 764 | 1950? | 1953 → 942? |
connection to WV 28, Cumberland |
| MD 765 | 1956 ← 2 (part) |
now | |
| MD 768 | when? ← 402 (part) |
now | |
| MD 769 | 1956? ← 201 (part) |
now | |
| MD 776 | 1956 | now | |
| MD 778 | 1965? 1987? ← 2 (part)? |
now | old 2, bypassed in 1964-1965, but not shown on maps until 1987 (and unlabeled) |
| MD 779 | when? ← 174 (part) |
now | |
| MD 781 | 1984 | now | |
| MD 783 | 1953? | now | frontage for US 50-301 |
| MD 784 | 1953? | now | frontage for US 50-301 |
| MD 785 | 1953? | now | frontage for US 50-301 |
| MD 786 | 1953? | 1986 | frontage for US 50-301 not on maps but listed on http://www.mdroads.com/routes/780-799.html#md786 |
| MD 787 | 1956? ← 194 |
2012 (HLR) | |
| MD 788 | 1964 ← 665 (part) |
now | no Annapolis inset in 1960-1963 |
| MD 794 | 1991 ← 4 (part) |
now | was there an earlier 794? |
| MD 795 | 1987 | now | |
| MD 795 | 1956? ← 343 (part) |
now | |
| MD 796 | when? ← 258 (part) |
now | |
| MD 797 | when? | now | existed by 1967 |
| MD 798 | when? ← 178 (part) |
now | existed by 1978 |
| MD 800 | 1960 (per bridge) ← 75 (part) |
now | |
| MD 801 | 1957 ← 313 (part) |
1987 | old 313, south of Galena |
| MD 802 | 1973? ← 8 (part) |
now | |
| MD 803 | 1955 | 1979 | Edgar Price Road, Warwick |
| MD 804 | 1960 ← 64 (part) |
now | |
| MD 805 | 1960 ← 60 (part) |
now | did this include old 418 too? |
| MD 806 | 1958 ← US 15 (part) |
now | was 806 also through Lewistown? it was in Frederick |
| MD 807 | 1981 ← US 220 (part) |
now | |
| MD 808 | 1972 ← 27 (part) |
now | |
| MD 809 | 1958 ← 273 (part) |
1979 | old 273, Calvert |
| MD 810 | when? | now | frontage for 210 was there an earlier 810? |
| MD 811 | 1958 | 1979 | Wilson Avenue, Rising Sun |
| MD 812 | 1958 ← 280 (part) |
1982 | old 280, Cherry Hill |
| MD 813 | 1987 ← 313 (part) |
now | |
| MD 813 | 1963 ← 276 (part) |
1979 | old 276, West Nottingham |
| MD 814 | 1967 (per bridge) ← 550 (part) |
now | |
| MD 815 | when? ← 349 (part) |
now | existed by 1968 |
| MD 816 | 1970? ← 16 (part) |
1970 | maps show 16 on its old alignment until 1970, thus never show 816, but http://www.mdroads.com/routes/800-819.html#md816 lists it |
| MD 817 | 1958 (per bridge) ← 16-331 (part), 318 (part) |
now | was this also old 16-331 through Ellwood, bypassed at about the same time? |
| MD 818 | 1969 ← US 113 (part) |
now | |
| MD 819 | when? ← 331 (part) |
now | |
| MD 820 | when? ← 313 (part) |
now | |
| MD 821 | when? ← 454 (part)? |
now | |
| MD 822 | 2001 (HLR) | now | |
| MD 822 | 1955 | 1979 | Joe Meltz Road, Warwick |
| MD 823 | 1962 ← 279 (part) |
1979 | old 279, Elkton |
| MD 824 | 1995? | now | part of US 222 until 1963-1964 |
| MD 825 | 1959 (per bridge) ← 135 (part) |
now | |
| MD 826 | 1959?? ← US 219 (part)? |
now | |
| MD 827 | when? ← 39 (part) |
now | |
| MD 828 | when? larr; 42 (part) |
now | |
| MD 830 | 1950?? (per bridge) ← US 220 (part) |
now | |
| MD 831 | 1957 or 1985? (per bridges) ← 36 (part) |
now | |
| MD 831 | when? ← 31 (part) |
now | |
| MD 832 | 1978 ← 32 (part) |
now | was there an earlier 832? |
| MD 833 | 1966? ← 88 (part) |
now | |
| MD 834 | 1966? | now | |
| MD 835 | 1987 | now | frontage for US 50-301, 8, 18 |
| MD 835 | 1953 | 1958 | old US 1, Rising Sun |
| MD 837 | when? | now | |
| MD 838 | when? | when? | Wye Island Road, labeled MD 838 in the NBI (new bridge 1990) |
| MD 843 | 1959 (per bridges) ← 63 (part) |
now | |
| MD 844 | 1960? ← 77 (part) |
now | |
| MD 845 | 1961 ← 34 (part) |
now | |
| MD 846 | when? ← 64 (part) |
now | |
| MD 847 | 1958 (per bridge) ← 64 (part) |
now | |
| MD 849 | when? ← 482 (part)? |
now | |
| MD 850 | 1954 (per bridges) ← 26 (part) |
now | |
| MD 851 | 1958 (per bridges) ← 32 (part) |
now | |
| MD 852 | 1959 (per bridges) ← 31 (part) |
now | |
| MD 853 | 1958? (per bridge) ← 194 (part) |
now | |
| MD 854 | 1959 (per bridge) ← 97 (part) |
now | |
| MD 855 | when? ← US 213 (part) |
now | |
| MD 856 | when? ← 298 (part) |
now | |
| MD 857 | 1959 ← 566 (part) |
1987 | Medders Road and Rosedale Cannery Road, Still Pond |
| MD 858 | 1959 (per bridges) ← 67 (part) |
now | |
| MD 859 | 1963 | 1987 | old 291, Chestertown |
| MD 863 | 1962? | now | |
| MD 864 | when? ← 292 (part) |
now | |
| MD 868 | when? ← 234 (part) |
now | |
| MD 870 | 1956? | now | http://www.mdroads.com/routes/mdroutes.txt says it was old 383 (?) with the new bridge from 1953 |
| MD 871 | 1965? ← 17 (part) |
now | |
| MD 872 | 1965? | now | frontage for US 340 |
| MD 873 | 1963? | now | |
| MD 874 | 1975 ← 75 (part) |
now | |
| MD 877 | 1975? | now | frontage for I-70 |
| MD 878 | 1958? | now | |
| MD 879 | 1964 (per bridge) ← MD 91 (part) |
now | |
| MD 880 | 1975 ← 80 (part) |
2008 (HLR) | Michaels Mill Road, Buckeystown-east |
| MD 889 | 1957? | now | |
| MD 890 | 1978 | 1985 | Slade Avenue, Pikesville unlabeled on maps but listed on http://www.mdroads.com/routes/880-899.html#md889 |
| MD 891 | 1958 or 1963? | 1995 | Hollins Ferry Road, Lansdowne unlabeled on maps but listed on http://www.mdroads.com/routes/880-899.html#md891 |
| MD 894 | 1966? | now | |
| MD 895 | 1985 | 1999 (HLR) | Lockwood Drive, White Oak-southwest formerly part of US 29 |
| MD 896 | 1946 ← 278 |
now | |
| MD 898 | 1971? ← 28 (part) |
1977 | not shown as a state road until 1972 not labeled on maps, but listed on http://www.mdroads.com/routes/880-899.html#md898 |
| MD 899 | when? | now | was once part of 28, but may have not been a state road for a while afterwards |
| MD 901 | 1954? | 1999 (HLR) | Whelan Lane, Clarksburg |
| MD 903 | 1987? | now | |
| MD 904 | 1960?? | now | frontage for 97 (now partly 140) |
| MD 908 | 1950?? | now | frontage for US 50-301 definitely existed by 1978 |
| MD 909 | 1953? | now | frontage for 424 |
| MD 910 | 1967? ← 66 (part)? |
now | |
| MD 911 | 1987 | now | |
| MD 912 | 1967 ← 282 (part) |
1979 | Peddlers Lane, Earleville |
| MD 912A | 1967 ← 282 (part) |
1979 | Old Crystal Beach Road, Earleville |
| MD 913 | 1968 ← 267 (part) |
1974 | Old 267, Charlestown |
| MD 914 | 1978 | 1993 | New Design Road, Frederick (frontage for I-70) unlabeled on maps but listed on http://www.mdroads.com/routes/900-919.html#md914 |
| MD 915 | 1971? ← 648 (part) |
now | old 648, bypassed in 1970-1971, but doesn't appear (unlabeled) until 1978, when the Baltimore inset expands was Catherine Avenue south from Armiger a state road in 1971-1973? |
| MD 917 | 1954? ← 175 (part) |
now | |
| MD 918 | 1969 | now | |
| MD 920 | 1961? | now | frontage for US 13 |
| MD 921 | 2009 (HLR) | now | |
| MD 922 | 2001 (HLR) 22 (part)? |
now | mostly signed as US 1B southbound |
| MD 924 | 1989 ← 755 (part) |
now | |
| MD 925 | 1956 ← US 301 (part) |
now | unlabeled until 1961; may have been part of 3 (but probably only in 1956, since in 1957 3 was moved back north to its current location? |
| MD 927 | 2001? | now | existed by 1999 (HLR) |
| MD 927 | 1970 ← 307 (part) |
1971 | Williamsburg-Federalsburg not labeled on maps but listed on http://www.mdroads.com/routes/920-939.html#md927 |
| MD 928 | 1981? ← 609 (part) |
now | not shown until 1983 |
| MD 929 | 2005 (HLR) | now | frontage for US 29 |
| MD 931 | 1993? | now | frontage for US 50-301 some pieces to the east might be older |
| MD 932 | 2008 (HLR) | now | |
| MD 935 | 1991 ← 936 (part) |
now | former 36, bypassed in 1981-1983 |
| MD 936 | 1972? ← 36 (part) |
now | |
| MD 937 | 1975 (per bridges) ← 36 (part) |
now | |
| MD 939 | when? | now | old 36? http://www.mdroads.com/routes/920-939.html#md939 says there was a former 939 in almost the same place |
| MD 940 | 1989 | now | |
| MD 942 | 1954? ← 764 |
now | |
| MD 943 | 1995 | now | lines up with former 143 |
| MD 943 | when? ← 243 (part) |
1999 (HLR) | existed by 1978 |
| MD 944 | when? ← 235 (part) |
now | |
| MD 945 | when? ← 235 (part) |
now | |
| MD 946 | 1973 (per bridge) ← 546 (part) |
now | |
| MD 948 | 1977? | now | frontage for US 48 (now I-68) |
| MD 949 | 1969? ← 49 (part) |
now | |
| MD 950 | 1991 | now | frontage for US 50 |
| MD 951 | 1953? (per bridge) ← 53 (part) |
now | |
| MD 952 | 1962 (per bridge) | now | |
| MD 953 | 1985 ← 193 (part) |
now | |
| MD 954 | 1987 (per bridge) | now | frontage for US 50 |
| MD 956 | 1967 | now | unlabeled until 1985 |
| MD 958 | 1971? | now | frontage for I-95 |
| MD 963 | 1971?? | now | |
| MD 964 | 1963?? | now | |
| MD 965 | 1957? | now | |
| MD 967 | 1967 ← 458 (part) |
now | frontage for 5 |
| MD 968 | 1959? | now | |
| MD 969 | 1959? | now | connects 168 and I-695 |
| MD 970 | 1989? | 1999 (HLR) | Industrial Drive, Gaithersburg |
| MD 972 | 1960?? ← 458 (part) |
now | |
| MD 973 | 1962 ← 459 (part) |
now | |
| MD 974 | 1957 ← 556 (part) |
now | |
| MD 975 | 2010 (HLR) | now | |
| MD 976 | 1960?? ← US 301 (part), 3 (part) |
now | |
| MD 977 | 1964?? | now | frontage for 202 |
| MD 978 | 1959 (per bridges) ← 214 (part) |
now | |
| MD 979 | when? | now | |
| MD 980 | 1962? | now | frontage for 4 |
| MD 981 | 1997? ← 108 (part) |
now | was there an earlier 981? |
| MD 983 | 1971? ← 216 (part) |
now | |
| MD 984 | when? | now | |
| MD 985 | 1967? ← 99 (part) |
now | |
| MD 986 | when? | now | frontage for US 29 |
| MD 987 | 1950? ← US 29 (part) |
1991 | |
| MD 988 | when? | 1999 (HLR) | |
| MD 990 | when? | now | |
| MD 991 | 1962? (per bridge) ← US 50 (part) |
now | |
| MD 992 | 1965? | now | frontage for US 50 |
| MD 993 | when? ← US 1A (part) |
now | |
| MD 995 | 1981 | now | |
| MD 996 | when? | 1999 (HLR) | Eggert Drive (frontage for I-495), Cabin John |
| MD 997 | 1989? | now | |
| MD 998 | 2007 (HLR) | now | |
| MD 999 | 2001 (HLR) | 2002 (HLR) | Old Hammonds Ferry Road, Linthicum |
The sole source for the existence of the following routes is the log on http://www.mdroads.com/routes/md.html (completely unknown routes are also listed). This concise listing may help with locating more complete or authoritative information.
- MD 513: old US 213 north of Chesapeake City, bypassed in 1949 (per bridge) but there was another 513 until 1954
- MD 523: old US 522 north of Hancock, 1966?
- MD 538: where?
- MD 597; Bonnie View Road; loop south off US 1 cut off on west side, NW of Harwood Park
- MD 633: old 26, Unionville, 1950 (per bridges)? to 1955
- MD 634: old 313, Federalsburg, 1956 to 1990
- MD 643: Halethorpe, 1947 (per bridge)
- MD 649: old 6 (?), Port Tobacco, 1955?? (per bridge) to 1956; originally Anne Arundel County? per http://www.mdroads.com/routes/mdroutes.txt
- MD 656: now part of 309, Easton
- MD 675: Carroll County per http://www.mdroads.com/routes/mdroutes.txt
- MD 679: Carroll County per http://www.mdroads.com/routes/mdroutes.txt
- MD 691: old 225, Indian Head, probably 1950 to 1961
- MD 705: perhaps an old alignment of 376 per http://www.mdroads.com/routes/mdroutes.txt
- MD 708: Ocean City
- MD 716: old 202, Landover, 1942 (per bridge)
- MD 717: old 36
- MD 719: old US 40, Casselman Creek; new bridge is from 1932, a bit early for the number
- MD 720: north of Berlin per http://www.mdroads.com/routes/mdroutes.txt, maybe old US 113 or 818?
- MD 721: C Street, Carney; seems to have served as a ramp from 147 north to 148 east
- MD 724: Allegany County
- MD 726: old 36
- MD 728: old 36
- MD 729: old 36
- MD 730: old 36
- MD 731: old 36
- MD 732: Allegany County
- MD 734: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 736: John Street, Westminster per http://www.mdroads.com/routes/mdroutes.txt
- MD 737: old US 40 east of Hancock
- MD 738: west of Wilson
- MD 739: near Wilson, until 1955
- MD 739: Allegany County per http://www.mdroads.com/routes/mdroutes.txt
- MD 740: Westminster, until 1985
- MD 740: near Wilson, until 1955
- MD 742: Frederick County
- MD 745, MD 747, MD 748: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 749: Solomons Island, disappeared from 1957 to 1963
- MD 749: related to 49??
- MD 757: old 165, until 1984
- MD 758: old US 13 north of Salisbury, 1952 (per bridge) to 1955
- MD 760: old 24 north of Van Bibber, 1956 per http://www.mdroads.com/routes/mdroutes.txt
- MD 766: old 650, Silver Spring per http://www.mdroads.com/routes/mdroutes.txt
- MD 767: where?
- MD 770: Conley Street, Dundalk
- MD 771: old 144 east of Ellicott City
- MD 772: Talbot County per http://www.mdroads.com/routes/mdroutes.txt
- MD 773: frontage for 2 south of 100 per http://www.mdroads.com/routes/mdroutes.txt, 1964?
- MD 774: where?
- MD 775: old 260, Chesapeake Beach per http://www.mdroads.com/routes/mdroutes.txt, 1960?
- MD 777: where?
- MD 780, MD 782: where?
- MD 789: where?
- MD 790: old 468, south of Annapolis, until 1983
- MD 791, MD 792: where?
- MD 793: old 424, Davidsonville
- MD 799: where?
- MD 824: old 273?, Oakwood, until 1979
- MD 829: where?
- MD 836: old 213, Centreville, 1961? (per bridge) to 1980
- MD 839: old 139, Towson, 1956? to 1959; Easton per http://www.mdroads.com/routes/mdroutes.txt
- MD 840: old 33 (?); did this include Old Claiborne Road from 33 north to 451 (e.g. 1961 map)?
- MD 841: May Port Rd., S. off 579, Talbot Co.
- MD 842: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 848: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 860: old 235, southeast of Hermanville
- MD 861: St. Mary's County per http://www.mdroads.com/routes/mdroutes.txt
- MD 862: St. Mary's County per http://www.mdroads.com/routes/mdroutes.txt
- MD 865: old 224, Marbury per http://www.mdroads.com/routes/mdroutes.txt
- MD 866: old 224, Mason Springs per http://www.mdroads.com/routes/mdroutes.txt
- MD 867: old 228, Waldorf per http://www.mdroads.com/routes/mdroutes.txt, 1993?
- MD 869: old 6, east of Doncaster
- MD 875: frontage for US 15, north of Lewistown
- MD 876: Frederick County per http://www.mdroads.com/routes/mdroutes.txt
- MD 881: old 68, Williamsport, 1965?
- MD 882: old 24, Edgewood per http://www.mdroads.com/routes/mdroutes.txt, 1964
- MD 883: where?
- MD 884: old 439, Maryland Line per http://www.mdroads.com/routes/mdroutes.txt, 1959
- MD 885: old 409, Maryland Line per http://www.mdroads.com/routes/mdroutes.txt, 1959?
- MD 886: Baltimore County per http://www.mdroads.com/routes/mdroutes.txt
- MD 887: old US 111, Cockeysville
- MD 888: related to US 1A?
- MD 892: stubs off MD 7 near bridge over MD 43, White Marsh per http://www.mdroads.com/routes/mdroutes.txt
- MD 893: Allegany County per http://www.mdroads.com/routes/mdroutes.txt
- MD 897: related to 650?; Allegheny County per http://www.mdroads.com/routes/mdroutes.txt
- MD 900: Montgomery County per http://www.mdroads.com/routes/mdroutes.txt
- MD 902: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 905: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 906: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 907: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 911: Washington County per http://www.mdroads.com/routes/mdroutes.txt
- MD 916: where?
- MD 919: where?
- MD 922: old 152, Edgewood, 1964 per http://www.mdroads.com/routes/mdroutes.txt
- MD 923: where?
- MD 924: I can't match this to what's shown on maps
- MD 926: where?
- MD 930: Anne Arundel County per http://www.mdroads.com/routes/mdroutes.txt
- MD 932: frontage for I-97/3/32, Millersville
- MD 933, MD 934: where?
- MD 938: where?
- MD 941: related to 38?; Allegheny County per http://www.mdroads.com/routes/mdroutes.txt
- MD 947: where?
- MD 955: where?
- MD 957: old 175, Waterloo, 1969
- MD 959: Prince George's County per http://www.mdroads.com/routes/mdroutes.txt
- MD 960, MD 961, MD 962: where?
- MD 966: where?
- MD 970: frontage for I-70, east of Mt. Airy, 1974??
- MD 971: Prince George's County per http://www.mdroads.com/routes/mdroutes.txt
- MD 975: Montevideo Road, Waterloo (don't see this as a state road on maps)
- MD 982: Old Columbia Pike., west of 29, Columbia (from 1992 state planning map)
- MD 988, MD 989: frontage for 100/607, 1971?
- MD 989: old US 50, Trappe, 1987 (per bridge) (why wasn't this 954?)
- MD 994: Anne Arundel County per http://www.mdroads.com/routes/mdroutes.txt
- MD 997: frontage for I-70, Woodlawn?
- MD 999: Old Frederick Road, Catonsville?