US 6 Clifton Improvement Project moves to next phase of roundabout and roadway construction

Travel Advisory

May 21, 2025 - Northwestern Colorado - Commuters can expect traffic impacts and detours

Mesa County - The Colorado Department of Transportation and contractor, United Companies, will move into the final phase of highway improvements on US Highway 6 (F Road) in Clifton from west of 1st Street to just east of 5th Street. The work is scheduled to begin on Monday, June 2.

The project team has resolved project delays due to saturated soils during underground construction for utilities. Redesign efforts were completed, and a revised schedule was developed and is now being implemented. Water and sewer mains are complete, and storm drain improvements are anticipated to be fully installed near the end of the summer.

This next phase of work will complete the second roundabout at 5th Street, add center medians, and an additional eastbound travel lane from 1st Street to 5th Street. Pedestrian and bicycle connections through the corridor will also be improved.

Traffic control will maintain two-way traffic during project construction and business access will remain open. During reconstruction, motorists are encouraged to utilize local streets to access businesses within the project work zone, as left turn movements and some right turn movements will be impacted.

The completed project will improve safety and traffic flow by realigning and updating traffic patterns on US 6. The project has already completed the 1First Street roundabout.

The project is part of CDOT’s 10-year plan improvements for the US 6 corridor in Mesa County.

The project is anticipated to be complete in the spring of 2026.

Traffic Impacts for the US 6 Clifton Improvements Project

  • Motorists should expect 10 minutes additional travel time on US 6 in both directions in Clifton, alternate routes are advised when possible
  • Side street access closures to US 6 within the project workzone
  • Alternating traffic for limited periods during the day due to construction activities
Contractors continue with infrastructure updates at US 6 Clifton improvement project as work shifts to next phase of construction.
Contractors continue with infrastructure updates at US 6 Clifton improvement project as work shifts to next phase of construction.

Project Information

Project information is available at:

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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