Wikipedia:WikiProject U.S. Roads/Colorado/Colorado 1923 numbers

The main source is [1].

State Highway 1, WY to NM
- Now US 87, SH 1, US 287, US 85
State Highway 2, NE to UT
- Now US 138, US 6, SH 144, US 34, US 85, US 40
State Highway 3, WY to Greeley
- Now US 85
State Highway 4, KS to UT
- Now US 24, US 6
State Highway 5, SH 1 Bulger to SH 3
- Now CR 126
State Highway 6, KS to SH 4 Grand Junction
- Now US 50
State Highway 7, SH 1 north of Lafayette to Estes Park
- Now SH 7
State Highway 8, SH 4 Antero Junction to KS
- Now US 285, SH 8, US 40
State Highway 9, Kremmling to Hartsel
- Now SH 9
State Highway 10, Walsenburg to UT
- Now US 160, SH 145, SH 184, US 491
State Highway 11, Kremmling to Wolcott
- Now Trough Road, SH 131
State Highway 12, La Junta to SH 111 Stonewall
- Now US 350, SH 12
State Highway 13, Rifle to WY
- Now SH 13
State Highway 14, NE to SH 2 Muddy Pass
- Now US 6, SH 14
State Highway 15, Buena Vista to San Luis
- Now US 285, SH 291, US 50, US 285, SH 15, SH 142?
State Highway 16, Granby to Greeley
- Now US 34
State Highway 17, SH 15 Mineral Hot Springs to SH 10 Pagosa Springs
- Now SH 17, US 84
State Highway 19, Montrose to NM
- Now US 550

State Highway 50, Monument to SH 4 Peyton
- Now SH 105, Hodgen Road
State Highway 51, Julesburg to KS
- Now US 385, CR 25, CR R, CR 22, CR N, CR 21, SH 116, CR 45, US 160, CR 44, CR X, CR 49, CR M
State Highway 52, New Raymer to SH 1
- Now SH 52
State Highway 53, SH 51 south of Wray to SH 4 near Kanorado
- Now CR 30, CR JJ, CR 27, CR KK, CR II, ?, CR II, CR 1, CR QQ, CR 59
State Highway 54, NE to Brush
- Now US 34
State Highway 55, Beshoar Junction to NM
- Now CR 81.5, CR 22, CR 105, CR 8, CR 6, SH 389
State Highway 56, west of Berthoud to SH 16 near Drake
- Now CR 8, CR 23, CR 12, CR 29
State Highway 57, SH 4 Stratton to SH 102
- Now CR 31, CR M
State Highway 58, Denver to SH 110 north of Central City
- Now 44th Avenue, SH 58, Golden Gate Canyon Road, SH 46
State Highway 59, NE to OK
- Now CR 19, US 138, SH 59, US 287
State Highway 60, Platteville to SH 1 near Campion
- Now SH 60
State Highway 61, SH 14 east of Sterling to SH 102 near Arickaree
- Now SH 61, CR RR
State Highway 62, Ridgway to Placerville
- Now SH 62
State Highway 63, SH 2 Atwood to SH 96 Haswell
- Now SH 63, CR CC, CR 0, CR 43, CR 44, CR J, CR 47, CR G, CR 49, CR 19
State Highway 64, Meeker to UT
- Now SH 64, CR 99
State Highway 65, SH 92 near Delta to SH 4 Mesa
- Now SH 65, NF 121, SH 330
State Highway 66, Longmont to Estes Park
- Now SH 66, US 36
State Highway 67, SH 96 Wetmore to Sedalia
- Now SH 67
State Highway 68, SH 2 Rifle Range to SH 2
- Now Golden Road, Lookout Mountain Road
State Highway 69, Walsenburg to SH 6 Texas Creek
- Now SH 69
State Highway 70, Petersburg (Englewood) to SH 8
- Now US 285
State Highway 71, Rocky Ford to SH 52 south of Brush
- Now SH 71
State Highway 72, Denver to SH 119 north of Rollinsville
- Now SH 72
State Highway 73, Evergreen to Conifer Junction
- Now CR 73
State Highway 74, Morrison to Echo Lake
- Now SH 74, SH 103
State Highway 75, SH 8 to SH 70
- Now SH 88
State Highway 76, Pueblo to SH 96 near McKenzie Ranch
- Now SH 78, SH 165
State Highway 77, Lake George to Jefferson
- Now Tarryall Road
State Highway 78, Wheeler to Red Cliff
- Now US 6
State Highway 79, Bennett to SH 52
- Now SH 79
State Highway 80, Redvale to SH 10 near Dove Creek
- Now SH 141
State Highway 81, SH 2 Sand Creek Junction to SH 52 near Hudson
- Now SH 2, US 6
State Highway 82, SH 4 near Twin Lakes to Glenwood Springs
- Now SH 82
State Highway 83, Denver to SH 1 near Sommers
- Now SH 83
State Highway 84, Toponas to SH 2
- Now SH 134
State Highway 85, Colorado Springs to SH 50
- Now Templeton Gap Road, Black Forest Road
State Highway 86, Castle Rock to SH 8 at River Bend
- Now SH 86
State Highway 87, Denver to Littleton
- Now SH 75
State Highway 88, SH 83 near Melvin to SH 87 near Littleton
- Now SH 88
State Highway 89, SH 6 near Holly to SH 51 near Stonington
- Now SH 89, CR 52, US 160, CR 51, CR Z, CR 49
State Highway 90, Montrose to UT
- Now SH 90
State Highway 91, SH 2 near Empire to Leadville
- Now US 6, SH 91
State Highway 92, Sapinero to Delta
- Now SH 92
State Highway 93, Morrison to Golden
- Now CR 93
State Highway 94, SH 4 east of Colorado Springs to Boyero
- Now SH 94
State Highway 95, SH 58 to SH 70
- Now SH 95
State Highway 96, Silver Cliff to KS
- Now SH 96
State Highway 97, Delta to SH 90 near Naturita
- Now Nucla-Delta Road, SH 97
State Highway 98, Evergreen to Bendemeer (Brookvale)
- Now Upper Bear Creek Road
State Highway 99, San Acacio to NM
- Now SH 142, ?, CR B, CR 8
State Highway 100, SH 55 near Trinchera to SH 51 near Stonington
- Now SH 389, US 160
State Highway 101, Las Animas to SH 100 west of Springfield
- Now SH 101
State Highway 102, Strasburg to KS
- Now US 36
State Highway 103, Idaho Springs to SH 8 near Schaefers
- Now SH 103, SH 5, unbuilt, CR 43
State Highway 104, SH 4 near Leadville to Basalt
- Now CR 105, Ivanhoe-Busk Tunnel, Frying Pan Road
State Highway 105, Sedalia to Palmer Lake
- Now SH 105
State Highway 106, Cortez to Ute Reservation
- Now US 491
State Highway 107, Wiggins to SH 2
- Now SH 39?
State Highway 108, Telluride to SH 145 near Vance Junction
- Now Colorado Avenue
State Highway 109, Genoa to southeast of Karval?
- Now CR 31, CR 32, CR T, CR 31
State Highway 110, Silverton to SH 149
- Now CR 2, CR 3, CR 18
State Highway 111, La Veta to NM
- Now SH 12, CR 13, CR 5
State Highway 112, Hooper to SH 10 Del Norte
- Now SH 112
State Highway 113, SH 2 north of Sterling to NE
- Now SH 113
State Highway 114, Saguache to Parlin
- Now SH 114
State Highway 115, Colorado Springs to SH 6 near Penrose
- Now SH 115
State Highway 116, SH 59 near Verdun to SH 51 east of Two Buttes
- Now SH 116
State Highway 117, Carlton to SH 51
- Now CR 19, CR N
State Highway 118, SH 89 Buckeye Crossroads to KS
- Now SH 116
State Highway 119, Idaho Springs to Boulder
- Now CR 279, SH 119
State Highway 120, Canon City to SH 67
- Now US 50, CR 123
State Highway 121, Arvada to Broomfield
- Now SH 121
State Highway 122, Cripple Creek to Colorado Springs
- Now Gold Camp Road?
State Highway 123, SH 15 Belleview Junction (Ted's Place) to WY
- Now US 287
State Highway 125, Granby to Pinkhampton (Northgate)
- Now SH 125
State Highway 127, WY to WY
- Now SH 127, SH 125
State Highway 129, Steamboat Springs to WY
- Now CR 129
State Highway 131, State Bridge to SH 2 near Sidney
- Now SH 131
State Highway 133, Bardine (Paonia Reservoir) to SH 82 near Bryant (Carbondale?)
- Now SH 133
State Highway 135, Gunnison to Hotchkiss
- Now SH 135, CR 12, SH 133
State Highway 137, Flagler to SH 63 near Thurmond
- Now CR 4, CR 0?
State Highway 139, Fruita to Rangeley
- Now SH 139
State Highway 141, Whitewater to SH 90
- Now SH 141
State Highway 143, Silver Cliff to Florissant
- Now Oak Creek Grade, Shelf Road, Cripple Creek-Florissant Road