District I:
HWY 72 (Coal Creek Canyon Rd, Indiana - 64th Ave to 86th Pkwy)
64th Ave
HWY 93
HWY 128
HWY 121 (Wadsworth Blvd)
HWY 36 (Boulder Turnpike)
HWY 95 (Sheridan Blvd)
I-76
HWY 58
I-70
HWY 6 (Clear Creek Canyon, Grand Army of the Republic HWY)
HWY 40 (Colfax Ave)
HWY 26 (Alameda Parkway)
C-470
HWY 8 (Morrison Rd)
HWY 285
District II:
HWY 285
HWY 8
C-470
HWY 121 (Wadsworth Blvd)
HWY 95 (Sheridan Blvd)
HWY 75 (Platte Canyon Rd)
District III:
HWY 40
I-70
HWY 74 (Evergreen Parkway, Bear Creek Rd)
HWY 285
District IV:
HWY 285
The Colorado Department of Transportation (CDOT) is responsible for all street surface repairs and maintenance including potholes, snow control, weed mowing and signal maintenance/timing on state highways within unincorporated Jefferson County. Please contact CDOT directly with any questions or concerns. For CDOT-maintained roads within Jefferson County, you may call 303-759-2368. The following is a list of roadways maintained by CDOT: US Hwy 6 SH 8 SH 26 US 36 US Hwy 40/Colfax SH 58 SH 67 SH 72 SH 74 SH 75 (Platte Canyon) SH 93 SH 95 (Sheridan) SH 121 (Wadsworth) SH 128 US Hwy 285 I 70 I 76 C 470.