CO 83 & US 285 Centerline Rumble Strip Project

Project Complete!

The project will include the CO 83 Rumble Strip Installation on centerline between MP 30.30 and MP 47.20 and on the US 285 centerline between  MP 299 and 233.21. The project goal is to improve safety for drivers. Rumble strips are an effective measure for reducing roadway departure crashes. Grooves are cut into the pavement which cause a vibration and rumbling sound when the tires of a moving vehicle come in contact with the cut pavement. 

Project Benefits

  • The noise and vibration produced by rumble strips alert drivers when they leave the travel lane. 
  • Centerline rumble strips reduce head-on collisions and cross-over crashes
  • Shoulder rumble strips reduce run-off-the-road crashes and warn drivers when they have drifted from their lane.

Work Schedule:

  • Work will last for approximately 18 working days
  • Working hours are in the evening from 6:00 p.m. to 6:00 a.m. Sunday to Friday
  • No weekend week is anticipated.

Traffic Impacts:

Motorists can expect the following impacts during the period of construction:

  • Lane closures in both directions of <location>
  • Traffic shifts on <location>
  • Reduced speeds through the work zone
  • Narrowed lanes and reduced shoulders
  • Width restrictions
  • Signs will be posted to alert motorists to the closures and available detour routes
  • Refer to for real-time travel conditions and road closures

Work this Week & Lane Closures Rumble Strip Project

Project Facts

  • Construction Cost: $417,000
  • Contractor: Surface Preparation Technologies
  • Timeline: early to late August 2023
  • Location: CO 83
    • Nearest Town/City: Castle Rock to Douglas County line
    • Mile Point(s): 30.20 to 47.20
    • County: Douglas
  • Location: US 285
    • Nearest Town/City: north of Conifer to Jefferson/Park County Line
    • Mile Point(s): 229.00 to 233.21
    • County: Jefferson