Construction starts soon on CO 66 and WCR 21 safety improvement project

Project Update

February 16, 2024 - Northeastern Colorado - Project is one of three between Mead, Platteville

Weld County – The Colorado Department of Transportation and Martin Marietta Materials will make safety improvements at the intersection of Colorado Highway 66 and Weld County Road 21 starting this month. Drivers should expect frequent traffic pattern changes and delays of up to ten minutes through the work zone.

This project will improve safety by adding left turn lanes to all intersection approaches. The intersection will be resurfaced with asphalt pavement to provide a smoother riding surface and increase the longevity of the highway. Work includes reconstructing drainage and irrigation systems. WCR 21 stop signs will be upgraded to flashing light displays for improved visibility. Project completion is anticipated in late summer.

CDOT will coordinate traffic control with at least two other projects on the CO 66 corridor between Mead and Platteville this construction season. One of the projects is upgrading traffic signals at WCR 7 and WCR 13. This work is ongoing and should be complete by this summer. The other project is a culvert replacement roughly one mile east of WCR 21 that is expected to start and finish this spring. Drivers are encouraged to take alternate routes, use extra caution in the work zones and follow all signs and markings.

The CO 66 and WCR 21 project may require single-lane operations with flaggers alternating traffic or temporary short-term detours for WCR 21 traffic. A temporary concrete barrier wall will be used to separate the work zone from adjacent travel lanes. Work zone speed limit reduction and oversize load width restriction are anticipated.

General work hours are Monday through Friday from 7 a.m. to 7 p.m. with occasional extended hours and weekend work. The construction schedule is weather-dependent and subject to change.

Stay Informed

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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