CO 66 to close west of Platteville for up to four nights next week

Project Update

March 25, 2024 - Northeastern Colorado - Critical culvert work needed, requiring over-night closures

Weld County — The Colorado Department of Transportation and Edge Contracting are performing critical culvert work on Colorado Highway 66 west of the Town of Platteville. Starting on Tuesday, April 2, CO 66 will close from 9 p.m. to 5 a.m. for up to four consecutive nights between Weld County Road 21 and WCR 30 ½.

The signed detour route will direct drivers to use WCR 21, WCR 28 and U.S. Highway 85 to avoid the work area. Access to adjacent properties located within the closed work area will be provided. All other traffic will be required to use the detour while crews perform work within deep trenches across the narrow highway.

This project replaces two culverts underneath CO 66 and improves the end sections of a third culvert. Other work includes slope grading and asphalt paving in the immediate area of the two culverts that are replaced. Installing new culverts now will improve the longevity of the highway while addressing deficiencies with the roadside drainage system.

In addition to CO 66 overnight closures, flaggers will periodically alternate traffic from 8 a.m. to 3 p.m., Monday through Friday. Drivers should expect frequent traffic pattern changes and delays of up to ten minutes through the work zone when crews are present. Although most of the project is expected to be complete within a few weeks, temporary surfaces may be present until later this summer when the final asphalt material is placed over the new culverts. This construction schedule is weather-dependent and subject to change.

CDOT continues to coordinate traffic control with at least two other projects on the CO 66 corridor between Mead and Platteville this construction season. Drivers are encouraged to take alternate routes, use extra caution in the work zones, and follow all signs and markings.

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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