The U.S. Highways in Colorado are the segments of the national United States Numbered Highway System that are owned and maintained by the state of Colorado. The longest of these highways is U.S. Highway 160 (US 160), which spans 497.223 miles (800.203 km)[1] across southern Colorado. The standards and numbering for the system are handled by the American Association of State Highway and Transportation Officials (AASHTO) while the routes in the state are maintained by the Colorado Department of Transportation (CDOT).
| U.S. Highways in Colorado | |
|---|---|
Standard highway markers for U.S. Highway 6, U.S. Highway 40 and U.S. Highway 160 | |
 U.S. Highways in Colorado highlighted in red | |
| Highway names | |
| US Highways | U.S. Highway X (US X) |
| System links | |
| |
Mainline highways edit
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 US 6
|
467.284[2] | 752.021 | I-70/US 6/US 50 near Mack | US 6 near Holyoke | 1931 | current | ||
 US 24
|
277.319[3] | 446.302 | I-70 near Minturn | US 24 near Burlington | 1936 | current | ||
 US 34
|
259.529[4] | 417.671 | US 40 in Granby | US 34 near Wray | 1939 | current | ||
 US 36
|
224.718[5] | 361.649 | US 34 at Deer Ridge in Rocky Mountain National Park | US 36 near Idalia | 1926 | current | ||
 US 38
|
— | — | Greeley | US 38 at the Nebraska state line | 1926 | 1931 | Became part of US 6 and US 34 | |
 US 40
|
486.924[6] | 783.628 | US 40 west of Dinosaur | US 40 east of Arapahoe | 1926 | current | ||
 US 40N
|
— | — | US 40 in Limon | US 40N at the Kansas state line | 1926 | c. 1935 | Became part of US 24 | |
 US 40S
|
— | — | US 40N in Limon | Grand Junction | 1926 | c. 1935 | Became parts of US 24 and US 40 | |
 US 50
|
467.583[7] | 752.502 | I-70/US 6/US 50 near Grand Junction | US 50/US 400 near Holly | 1926 | current | ||
 US 84
|
27.924[8] | 44.939 | US 160 near Pagosa Springs | US 84 near Chromo | 1941 | current | ||
 US 85
|
309.542[9] | 498.160 | I-25/US 85/US 87 near Trinidad | US 85 near Eaton | 1926 | current | ||
 US 87
|
298.879[10] | 480.999 | I-25/US 85/US 87 near Trinidad | I-25/US 87 | 1936 | current | Entirely concurrent with Interstate 25 within the state. | |
 US 138
|
59.823[11] | 96.276 | US 6 near Sterling | US 138 near Julesburg | 1926 | current | Orphan route. Was a spur of US 38 before it became part of US 6. | |
 US 160
|
497.223[1] | 800.203 | US 160 near Teec Nos Pos, Arizona | US 160 near Walsh | c. 1930 | current | Original western terminus was Trinidad. Extended via US 85 and US 450 to near Dove Creek in 1934. Rerouted west of Cortez via US 164 in 1970 toward Four Corners Monument. | |
 US 164
|
40.290[12] | 64.840 | US 164 near Four Corners Monument | Cortez | 1964 | 1970 | Became part of US 160 west of Cortez | |
 US 285
|
263.947[13] | 424.782 | US 285 near Antonito | I-25 in Denver | 1936 | current | Originally terminated on Alameda Ave. at US 85/US 87. In 1969, rerouted to terminate at US 40 (Colfax Ave.) in Aurora. Truncated at I-25 in Denver in 1979. | |
 US 287
|
385.223[14] | 619.956 | US 287/US 385 near Campo | US 287 near Virginia Dale | 1935 | current | ||
 US 350
|
72.718[15] | 117.028 | US 160 near Walsenburg | US 50 in La Junta | c. 1926[16] | current | ||
 US 385
|
317.631[17] | 511.178 | US 287/US 385 near Campo | US 385 near Julesburg | 1958 | current | ||
 US 400
|
14.814[7] | 23.841 | US 50/US 385 in Granada | US 50/US 400 near Coolidge, Kansas | 1996 | current | Entirely concurrent with US 50 within the state | |
 US 450
|
— | — | US 450 at the Utah state line | US 85/US 87 in Walsenburg | — | 1939 | Now US 491 north of Cortez and US 160 from Cortez to Walsenburg | |
 US 491
|
69.602[18] | 112.014 | US 491 north of Shiprock, New Mexico | US 491 north of Dove Creek | 2003[19] | current | Formerly US 666 | |
 US 550
|
130.219[20] | 209.567 | US 550 near Durango | US 50 in Montrose | 1926 | current | ||
 US 650
|
— | — | — | — | c. 1927 | 1936 | Now SH 291 through Salida and US 285 south of Buena Vista | |
 US 666
|
69.602[18] | 112.014 | US 666 north of Shiprock, New Mexico | US 666 north of Dove Creek | c. 1926 | 2003[19] | Now US 491 | |
 US 789
|
— | — | New Mexico state line | Wyoming state line | — | — | Proposed, but never commissioned; would have followed (south to north): US 666, US 160, US 550, US 6/US 24, SH 13 | |
| ||||||||
Special routes edit
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 US 6 Byp.
|
— | — | — | — | — | — | Served Colorado Junction | |
 US 24 Bus.
|
— | — | Manitou Springs | Colorado Springs | — | — | ||
| US 34 Bus.
|
— | — | — | — | — | — | Serves Estes Park | |
| US 34 Bus.
|
— | — | — | — | — | — | Serves Greeley | |
| US 34 Bus.
|
— | — | — | — | — | — | Served Brush | |
 Temp. US 40
|
— | — | Steamboat Springs | Kremmling | — | — | ||
| US 50 Bus.
|
— | — | Pueblo | Avondale | — | — | ||
| US 50 Bus.
|
— | — | — | — | — | — | Serves Olathe | |
| US 85 Byp.
|
— | — | Fountain | Colorado Springs | — | — | ||
| US 85 Bus.
|
— | — | — | — | — | — | Serves Brighton | |
| US 85 Bus.
|
— | — | — | — | — | — | Serves Fort Lupton | |
| US 85 Bus.
|
— | — | — | — | — | — | Serves Platteville | |
| US 85 Bus.
|
— | — | — | — | — | — | Serves Greeley | |
| Temp. US 87
|
— | — | — | — | — | — | Served Denver | |
 US 160 Bus.
|
— | — | — | — | — | — | Serves Mancos | |
| US 160 Bus.
|
— | — | — | — | — | — | Serves Durango | |
| US 160 Bus.
|
— | — | — | — | — | — | Serves Bayfield | |
| US 350 Byp.
|
— | — | — | — | — | — | Serves Trinidad | |
| US 550 Bus.
|
— | — | — | — | — | — | Serves Durango | |
| ||||||||
See also edit
References edit
- ^ a b "Highway Explorer". CDOT OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 29, 2017.
- ^ "Highway 006J between 371.69 and 467.284". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "US 24 inventory form" (PDF). Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 034B between 158.485 and 259.529". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 036D between 89.21 and 224.718". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 040H between 386.01 and 486.924". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ a b "Highway 050B between 315.709 and 467.583". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 084A between 0 and 27.924". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 085L between 265.849 and 309.542". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 025A between 0 and 298.879". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway Data Explorer". CDOT OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 29, 2017.
- ^ "Highway 160A between 0 and 40.290". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway Explorer". CDOT OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 29, 2017.
- ^ "Highway 287C between 282.7 and 385.223". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway Explorer". CDOT OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 29, 2017.
- ^ "US 350 Inventory Form" (PDF). Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ "Highway 385E between 313.849 and 317.631". Colorado Department of Transportation. Retrieved April 9, 2023.
- ^ a b "Highway Explorer". CDOT OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 29, 2017.
- ^ a b Linthicum, Leslie (July 31, 2003). "It's Now US 491, Not US 666". Albuquerque Journal. Retrieved September 29, 2017.
- ^ "Highway 550B between 20.916 and 130.219". Colorado Department of Transportation. Retrieved April 9, 2023.