New Castle US 6 roundabout project begins winter shutdown

Travel Advisory

Jan. 31, 2025 - Northwestern Colorado - The project will replace temporary asphalt, complete median, concrete work, and landscaping next spring

Garfield County — The Colorado Department of Transportation’s roundabout project at US Highway 6 in New Castle will begin a winter shutdown. The project will go into shutdown on Jan. 31 and will resume construction activity in early March, weather permitting. The project completion is scheduled for May 2025.

The roundabout is fully functional and traffic will be free-flowing once the winter shutdown begins. Temporary pavement will be in place at the City Market and Maverik accesses as well as northbound Castle Valley Boulevard to the project limits.

When weather allows in the spring, crews will replace the temporary pavement with permanent asphalt pavement. Additional work to be completed next year includes median and color concrete work as well as landscaping.

The schedule for winter shutdown and reopening is weather dependent. An announcement will be issued ahead of work starting back up. If mild weather is forecast, it's possible the project may start back up in February or March.

Stay Informed and Connect with the project

Project information is available at:

The overhead view of construction work on US 6 in New Castle.
The overhead view of construction work on US 6 in New Castle. Construction work shuts down for winter Jan. 31 with project completion scheduled for May 2025.

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!

Download the COtrip App!

The new free COtrip Planner mobile app was designed to meet the growing trend of information on mobile and tablet devices for the traveling public. The COtrip Planner app provides statewide, real-time traffic information, and works on mobile devices that operate on the iOS and Android platforms. Visit the Google Play Store (Android devices) or the Apple Store (iOS devices) to download!