Wikipedia:WikiProject U.S. Roads/Utah/Pre-1919 state roads by county

This information comes from early reports (1909-1912, 1913-1914, 1915-1920) and the history PDFs.

1912: 60.31
1915: 66.0
1916: 88.0 (Milford-Newhouse)
  • Beaver-Iron County (1916)
    • remained in 1920
    • Now I-15
  • 1910-08-22 Beaver-Milford (1916)
    • remained in 1920
    • Now SR-21 (via The Pass Road)
  • Beaver-Millard County (1916)
    • remained in 1920
    • Now I-15
  • 1916-11-10 Milford-Newhouse (1916)
    • remained in 1920
    • Now SR-21
  • New in 1920: Beaver-Piute County
1912: 171.00
1915: 212.3
1916: 212.3
  • 1916-01-10 Brigham-Collinston (1916)
  • 1910-06-06 Brigham-Tremonton (1916)
    • remained in 1920
    • Now SR-13
  • Brigham-Weber County (1916)
    • remained in 1920
    • Now US-89
  • Brigham-Wellsville, Cache County (1916)
    • remained in 1920
    • Now US-91
  • 1916-01-10 Garland-Cache County (1916)
  • Garland-Point Lookout (1916)
    • Now ?? (4.5 mi)
  • Showell-Idaho (1916, not 1919)
  • 1910-06-06 Tremonton-Idaho (1916)
  • 1912-05-08 Tremonton-Nevada (1916)
  • Deweyville-Tremonton
  • Elwood School to Sugar Factory
  • Brigham City
    • remained in 1920
  • 1915-06-01 ("south road through Corinne City")
    • Now ??
  • New in 1920: Tremonton-Snowville, Hot Springs-Brigham, Snowville-Nevada, Midland Trail, Tremonton City
1912: 32.98
1915: 146.35
1916: 143.35
  • 1916-08-17 Avon-Weber County (1916)
  • 1915-08-10 Lewiston-Cornish (1916)
  • Logan City Roads (1916)
  • Logan-Petersboro (1916)
  • 1914-10 Logan-Rich County (1916)
  • Logan-Smithfield (1916)
    • remained in 1920
    • Now US-91
  • 1914 Newton-Clarkston (1916)
  • Newton-Idaho (1916)
  • Petersboro-Box Elder County (1916)
  • 1915-08-10 Providence-Avon (1916)
  • Richmond-Idaho (1916)
  • 1915-08-10 Richmond-Lewiston (1916)
    • Now SR-142, Main Street? (4.5 mi)
  • Smithfield-Richmond (1916)
    • remained in 1920
    • Now US-91
  • Wellsville-Brigham, Box Elder County (1916)
    • remained in 1920
    • Now US-91
  • Wellsville-Newton (1916)
  • Logan-Wellsville (1916)
    • remained in 1920
    • Now US-91
  • 1914 (Newton-Benson-Logan)
  • 1915-08-10 (Cornish-Cache Junction)
  • 1915-08-10 (Petersboro-Wellsville)
  • New in 1920: Smithfield-Idaho, Logan-Garden City
1912: 63.80
1915: 54.9
1916: 99.9
  • 1910-10-12, 1912-05-04, 1916-04-24 Castle Gate-Duchesne (1916)
  • 1910-10-12 Castle Gate-Utah County (1916)
  • 1910-10-12 Price-Castle Gate (1916)
    • remained in 1920
    • Now US-6
  • 1916-01-10 Price-Duchesne County (1916)
    • Now ? (via Soldiers' Canyon, 32.5 mi)
  • 1910 Price-Emery County (1916)
    • remained in 1920
    • Now SR-10
  • 1910-10-12 Price-Sunnyside (1916)
  • 1916-04-24 Mud Springs-Emery County (1916)
  • Wellington-Emery
  • Hiawatha-Cedar Mesa
  • Price-Edwards Ranch
  • New in 1920: Emma Park, Wellington-Myton, Price-Sunnyside Junction
  • Linwood-Wyoming
  • Linwood-Manila
    • remained in 1920
  • Manila-Wyoming
  • New in 1920: Forest Road No. 10 (Vernal-Wyoming)
1912: 34.12
1915: 34.2
1916: 34.2
  • Farmington-Salt Lake County (1916)
  • Farmington-Weber (1916)
  • South Weber (1916)
    • remained in 1920
    • Now ?? (7.5 mi)
  • North Salt Lake-Cudahy
  • New in 1920: Farmington-Centerville, Sunset-Clearfield, Farmington City, Riverdale-Morgan, Kaysville-Layton
1915: 99.7
1916: 99.7
  • 1910-10-12 Duchesne-Carbon County (1916)
  • 1910 Duchesne-Uintah County (1916)
  • Duchesne-Utah County (1916)
    • Now US-191, Reservation Ridge Road?
  • 1910 Duchesne-Wasatch County (1916)
    • remained in 1920
    • Now US-40
  • Myton-Carbon
    • remained in 1920
  • Duchesne-Stockmore
  • New in 1920: Duchesne-Roosevelt, Stockmore-Wasatch
1912: 115.11
1915: 115.8
1916: 173.5
  • 1910 Castle Dale-Carbon County (1916)
    • remained in 1920
    • Now SR-10
  • Castle Dale-Green River (1916)
    • Now local roads
  • Castle Dale-Sanpete County (1916)
  • 1910 Castle Dale-Sevier County (1916)
  • 1916-04-24 Green River-Carbon County (1916)
    • remained in 1920
    • Now US-6
  • 1914-12-19 Huntington-Mohrland (1916)
    • Now Mohrland Road
  • Lawrence-Carbon
  • Huntington-Sanpete
    • remained in 1920
  • Mohrland-Black Hawk
  • 1915-11-22 (Orangeville-Sanpete County)
  • New in 1920: Castle Dale-Emery, Emery-Sevier, Orangeville-Sanpete
1912: 54.00
1915: 118.1
1916: 118.1
  • 1914-07-07 Escalante-Antimony (1916)
    • remained in 1920
    • Now SR-12, Old Escalante Road, John's Valley Road, SR-22
  • Antimony-Piute County (1916)
  • 1914-07-07 Hillsdale-Henrieville (1916)
  • Panguitch-Kane County (1916)
    • remained in 1920
    • Now US-89
  • Panguitch-Piute County (1916)
    • remained in 1920
    • Now US-89
  • Orton-Iron
    • remained in 1920
  • 1915-01-13 (Antimony-Piute County)
  • 1915-12-21 (Orton-Piute County)
1912: 107.75
1915: 101.4
1916: 127.0
  • 1916-06-26 Moab-Castleton (1916)
  • 1910 Moab-San Juan County (1916)
  • 1910, 1915-12-21 Moab-Valley City (1916)
  • 1912, 1915-12-21 Valley City-Colorado (1916; Valley City-Thompsons in 1919)
  • 1912-05-04 Valley City-Green River (1916)
    • remained in 1920
    • Now I-70
  • New in 1920: Thompsons-Moab, Moab-Colorado, Valley City-Cisco
1912: 120.40
1915: 115.8
1916: 154.6 (Parowan-Lund)
  • 1912-08-02 Cedar-Kane County (1916)
    • remained in 1920
    • Now SR-14
  • 1912-08-02 Cedar-Lund (1916)
  • Parowan-Beaver County (1916)
  • Cedar-Washington County (1916)
    • remained in 1920
    • Now I-15
  • 1915-12-21 Parowan-Lund (1916)
    • Now Gap Road? (40.5 mi)
  • Paragoonah-Garfield
    • remained in 1920
  • Modena-Washington
    • remained in 1920
  • Parowan-Cedar (1916)
  • 1915-12-21 (Kanarra-Beaver County)
  • New in 1920: Cedar-Buckhorn, Buckhorn-Beaver, Cedar-Beaver
1912: 57.50
1915: 96.5
1916: 132.6
  • Boulter-Diamond (1916)
    • Now SR-36, Silver Pass Road
  • Eureka-Millard County (1916)
    • Now ?, US-6 (32.1 mi)
  • 1915-11-22 Eureka-Tintic Junction (1916)
  • 1915-11-22 Eureka-Tooele County (1916)
  • Eureka-Utah (1916)
  • Levan-Millard County (1916)
    • remained in 1920
    • Now I-15
  • 1916-02-28 Levan-Sanpete County (1916)
  • Mona-Elberta (1916, not 1919)
    • Now ?? (6.7 mi)
  • 1915-12-21 Nephi-Levan (1916)
    • remained in 1920
    • Now I-15
  • Nephi-Sanpete (1916)
  • 1915-12-21 Nephi-Utah County (1916)
    • remained in 1920
    • Now I-15
  • Juab Mills-Millard
  • 1916-03-13 (Boulter-Millard County)
1912: 102.50
1915: 120.1
1916: 120.1
  • Gravel Springs-Garfield County (1916)
  • Kanab-Johnson-Gravel Springs (1916)
    • remained in 1920
    • Now US-89, Johnson Canyon Road, Alton Road, local road
  • 1915-12-21 Kanab-Mt. Carmel (1916)
  • 1912-08-02 Mt. Carmel-Gravel Springs (1916)
  • Mt. Carmel-Iron County (1916)
    • Now ?? (27.8 mi)
  • Kanab-Arizona
    • remained in 1920
  • Kanab-Panguitch
  • New in 1920: Long valley-Iron, Kanab-Garfield
1912: 94.50
1915: 142.0
1916: 158.5 (Delta-Lynndyl)
  • 1912-08-02 Cove Fort-Sevier County (1916)
    • remained in 1920
    • Now I-70
  • 1915-05-24 Delta-Hawbush (1916; Delta-Holden in 1919)
  • 1915-05-24 Delta-North Tract (1916)
    • Now ?? (17.0 mi)
  • 1916-11-10 Delta-Lynndyl (1916)
  • Fillmore-Beaver County (1916)
  • 1916-08-17 Fillmore-Cedar Mt. (1916)
    • Now 900 West
  • Fillmore-Holden (1916)
  • 1910-08-23 Holden-Oasis (1916)
  • Holden-Scipio[-Juab County] (1916)
    • remained in 1920
    • Now I-15
  • Oasis-Hinckley (1916)
    • Now ?? (7.0 mi)
  • East Scipio-Juab
  • West Scipio-Juab
  • 1915-12-21 (Cove Fort-Beaver County)
  • New in 1920: Kanosh-Beaver, Holden-Kanosh, Scipio-Juab
1912: 26.19
1915: 30.65
1916: 50.15
  • 1916-06-26 North Morgan-Peterson (1916)
  • Devil's Slide-Croydon (1916)
    • Now Croydon Road
  • 1915-05-03 Devil's Slide-Henefer (1916)
  • Emigrant Trail (1916; not in 1919)
    • Now ?? (12.00 mi)
  • Morgan-Devil's Slide (1916)
    • remained in 1920
    • Now I-84
  • Morgan-Porterville (1916)
  • Morgan-Weber County (1916)
    • Now Morgan Valley Road, I-84
  • New in 1920: Peterson-Weber, Morgan County Loop
1912: 25.09
1915: 49.6
1916: 49.6
  • 1915-05-03 Junction-Circleville (1916)
    • remained in 1920
    • Now US-89? (11.2 mi)
  • Junction-Coyote, Garfield County (1916)
  • Junction-Marysvale (1916)
    • remained in 1920
    • Now US-89
  • Marysvale-Sevier County (1916)
    • remained in 1920
    • Now US-89
  • Loa, Wayne County-Burrville, Sevier County (1916)
    • remained in 1920
    • Now SR-24
  • 1915-12-21 (Circleville-Piute County)
  • 1915-12-21 (Junction-Kingston)
1912: 52.13
1915: 69.5
1916: 74.0
  • 1912-05-14 Evanston, Wyoming-Summit County (1916)
  • 1914-10, 1914-12-12 Garden City-Cache County (1916)
    • remained in 1920
    • Now US-89
  • 1910, 1915-12-21 Garden City-Idaho (1916)
  • 1910, 1915-12-21 Garden City-Laketown (1916)
  • 1910 Laketown-Sage Creek (1916, not 1919)
  • Woodruff-Weber
    • remained in 1920
  • 1910, 1915-12-21 Randolph-Evanston, Wyoming (1916)
  • 1910 Randolph-Sage Creek (1916)
  • 1915-05-24 Sage Creek-Wyoming (1916, not 1919)
  • New in 1920: Randolph-Woodruff, Wyoming-Summit
1912: 46.00
1915: 53.3
1916: 82.5
  • Emigrant Trail (1916)
  • East Twenty-first South (1916)
    • Now 2100 South? (2.4 mi)
  • 1916-11-13 East Thirty-third South (1916)
  • Parley's Canyon (1916)
    • remained in 1920
  • Magna-Tooele County (1916)
  • Salt Lake City Roads
  • 1916-06-10 Salt Lake-Davis County (1916)
    • remained in 1920
    • Now US-89
  • Salt Lake-Utah County (1916)
  • West Twenty-first South (1916)
  • 1916-04-24 West Thirty-third South (1916)
  • Capitol-St. Marks
  • 1916-03-13 (State Street, Murray)
  • New in 1920: Salt Lake-Midvale, Midvale-Utah, Twenty-first South
1912: 134.00
1915: 146.5
1916: 158.0
1912: 94.85
1915: 95.8
1916: 153.1
1912: 146.60
1915: 151.0
1916: 151.0
  • Elsinore Road (1916)
    • Now ?? (9.9 mi)
  • 1912-08-12 Glenwood-Burrville (1916)
  • Joseph-Piute (1916)
  • Monroe Road (1916)
  • Richfield-Austin (1916)
  • Richfield-Glenwood (1916)
  • Richfield-Salina (1916)
  • 1912, 1915-12-21 Salina Canyon (1916)
  • Salina-Sanpete County (1916)
    • remained in 1920
    • Now US-89
  • 1912-08-02 Sevier-Millard County (1916)
    • remained in 1920
    • Now I-70
  • 1912-08-02 Sigurd-Bear Valley (1916)
  • Burrville-Fish Lake Road
    • remained in 1920
  • Richfield City
    • remained in 1920
  • 1915-12-21 (Joseph-Monroe)
  • 1915-12-21 (Joseph-Cove)
  • 1915-12-21 (Vermillion-Richfield)
  • Now in 1920: Richfield-Piute, Salina-Emery, Sigurd-Piute
1912: 101.00
1915: 114.8
1916: 114.8
  • 1910 Coalville-Echo (1916)
  • 1910 Coalville-Peoa (1916)
  • Echo-Henefer (1916)
  • Henefer-Croydon (1916)
    • Now Henefer Road
  • Henefer-Emigrant Trail (1916)
  • 1915-05-03 Henefer-Narrows (1916)
  • 1914 Kamas-Wasatch County (1916)
  • Park City Roads (1916)
  • Park City-Daly Judge (1916)
    • Now ?? (1.6 mi)
  • 1910-06-06 Park City-Kamas (1916)
  • 1915-12-21 Park City-Peoa (1916)
    • Now Browns Canyon Road? (2.0 mi)
  • 1910 Park City-Salt Lake County (1916)
  • 1910, 1915-12-21 Park City-Wasatch County (1916)
    • remained in 1920
    • Now old US-40 (south of SR-248)
  • 1910-06-06 Peoa-Kamas (1916)
    • remained in 1920
    • Now SR-32
  • 1912-05-14 Echo-Rich County (1916)
    • remained in 1920
    • Now I-80
  • Kimballs-Wanship
    • remained in 1920
  • New in 1920: Coalville-Morgan, Park City-Kimballs, Wanship-Kamas, Wanship-Coalville
1912: 32.50
1915: 231.8
1916: 249.8
  • Grantsville-Grants (1916)
    • Now ?? (7.0 mi)
  • Grantsville-Mills (1916)
  • 1913 Grantsville-Timpie (1916)
  • Ibapah-Nevada (1916)
    • Now ?? (38.0 mi)
  • Timpie-Orr's Ranch (1916)
  • 1912 Tooele-Juab County (1916)
  • 1910, 1915-12-21 Tooele-Salt Lake County (1916)
  • 1915-08-24 Timpie-Nevada (1916)
  • Tooele-Grantsville
  • Clover-Orr's Ranch
    • remained in 1920
  • 1915-12-20 (Wendover-Ibapah-Nevada)
  • 1915-12-21 (Tooele-Vernon)
  • 1916-03-13 (Vernon-Juab County)
  • New in 1920: Grantsville-Wendover, Tooele-Clover, Orr's Ranch-Nevada
1912: 64.40
1915: 63.5
1916: 63.5
  • 1911, 1915-12-21 Jensen-Colorado (1916)
  • 1910 Vernal-Duchesne County (1916)
    • remained in 1920
    • Now US-40
  • 1910 Vernal-Jensen (1916)
  • Vernal City
  • New in 1920: Vernal-Daggett, Vernal-Colorado
1912: 150.20
1915: 160.6
1916: 204.5
  • American Fork City (1916)
    • remained in 1920
    • Now ?? (1.9 mi)
  • 1916-05-08 Benjamin Branch (1916)
  • Goshen-Juab County (1916)
  • 1916-05-08 Lakeview Branch (1916)
  • Lehi City Roads (1916)
    • remained in 1920
    • Now ?? (2.5 mi)
  • 1916-05-08 Lehi-Tooele County (1916)
  • Payson City Road (1916)
    • remained in 1920
    • Now ?? (2.4 mi)
  • Pleasant Grove City (1916)
    • remained in 1920
    • Now ?? (1.6 mi)
  • 1912-04-05 Provo Canyon Road (1916)
  • Provo City Roads (1916)
    • remained in 1920
    • Now ?? (15.2)
  • Provo-Salt Lake County (1916)
  • Provo-Spanish Fork (1916)
    • remained in 1920
    • Now US-89? (4.6 mi)
  • Santaquin City Road (1916)
    • Now ?? (2.2 mi)
  • Santaquin-Payson Canyon (1916)
    • Now ?? (18.8 mi)
  • Spanish Fork City (1916)
    • remained in 1920
    • Now ?? (3.5 mi)
  • Spanish Fork-Juab (1916)
  • 1912-05-16 Spanish Fork-Thistle (1916)
  • Springville City Roads (1916)
    • Now ?? (2.5 mi)
  • 1916-05-08 Springville-Spanish Fork Canyon (1916)
  • 1912-05-16 Thistle-Carbon County (1916)
  • 1912-04-05 Thistle-Sanpete County (1916)
  • Orem-Provo Canyon
  • 1915-06-28 (Lehi-Jordan River)
  • New in 1920: American Fork-Salt Lake, Pleasant Grove-Provo, Spanish Fork-Payson, Payson-Juab, Springville-Sanpete, Thistle-Duchesne
1912: 173.00

Duchesne County was split off in 1915

1915: 78.3
1916: 78.3
  • 1910 Heber-Duchesne County (1916)
  • Heber-Midway (1916)
    • Now Midway Lane
  • 1910 Heber-Park City (1916)
  • 1912-04-05 Heber-Utah County (1916)
  • Park City-Kamas (1916)
  • Midway-Charleston
  • Midway-Riverdale
  • Stewart's Ranch-Wasatch
  • New in 1920: Heber-Fruitland, Stewart's Ranch-Duchesne, Heber-Summit
1912: 45.00
1915: 59.5
1916: 124.6
  • 1912-08-05 Anderson's-Hurricane (1916)
  • Anderson's-Iron County (1916)
  • 1914 Hurricane-Arizona (1916)
  • La Verkin-Zion Canyon (1916)
    • remained in 1920
    • Now SR-9
  • St. George-Anderson's (1916)
    • remained in 1920
    • Now I-15
  • St. George-Arizona (1916)
  • St. George-Modena
  • 1916-03-24 (Shem-Arizona)
  • New in 1920: St. George-Enterprise, Anderson-Arizona
1912: 87.50
1915: 90.2
1916: 86.2
1912: 41.00
1915: 73.2
1916: 85.5 (Eden-Cache County)
  • 1916-08-17 Eden-Cache County (1916)
  • Devil's Gate (1916)
  • 1915-12-21 Five Points-Plain City (1916)
    • Now US-89, Harrisville Road
  • Ogden-Box Elder (1916)
  • Ogden City Roads (1916)
    • Now ?? (10.0 mi)
  • Ogden-Davis County (1916)
    • remained in 1920
    • Now SR-26
  • 1911-07-18 Ogden-Huntsville (1916)
    • remained in 1920
    • Now SR-39
  • 1915-12-21 Ogden-Wilson (1916)
    • Now ?? (1.0 mi)
  • 1912-05-16 Riverdale-Davis County (1916)
  • 1915-12-21 Wilson-Hooper (1916; Ogden-Hooper in 1919)
  • Wilson-Warren (1916)
    • Now ?? (14.0 mi)
  • Huntsville-Randolph
  • New in 1920: Ogden-Five Points, Riverdale-Morgan, Five Points-Box Elder, North Ogden-Hot Springs, Roy-Ogden, Washington Avenue, Huntsville-Rich