CDOT begins surface and safety improvement work on US 36

Travel Advisory

May 12, 2023 - Southeastern Colorado - Work will take place on US Highway 36 between Boulder and Lyons.

Boulder County — The Colorado Department of Transportation will begin resurfacing and widening efforts on Monday, May 15. Work will take place on US Highway 36 between Boulder and Lyons.

This project will take place over an approximately 17-week period on US 36 within the following Mile Point ranges:

  • MP 19.80 to MP 21.86
  • MP 21.86 to 25.80
  • MP 25.90 to 27.12
  • MP 27.55 to 27.80

Martin Marietta Materials, Inc. is the contractor for this project.

This project will improve the safety capabilities at US 36 for vehicles, pedestrians and bike riders. The route between Boulder and Lyons is a commonly used bike corridor, but unfortunately a significant amount of accidents occur here. This work will seek to address that safety concern through widening corridors and road resurfacing.

Travel Impacts

Daytime work hours range from 7 a.m. to 7 p.m. Monday through Friday. Motorists and cyclists can expect various shoulder closures throughout the project’s duration, and right lane closures at Left Hand Canyon and Nelson Road. Night work will take place between 9 p.m. and 5 a.m., and feature mobile closures. Both Northbound and Southbound traffic will be affected. The project is expected to last into August.

Project Information

For additional information about this project, contact the project team.

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow For The Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts and merge when directed to do so.
  • Be patient!

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