US 6 New Castle Roundabout

About the Project:

This project is located on US 6 and Castle Valley Road/Spur Road in Garfield County. Work will take place from Mile Point 107.03 and MP 107.35. The work consists of constructing a multilane roundabout at the intersection, a ¾ movement intersection at the Castle Valley Blvd and New Castle Plaza access, improvements to the RFTA park and ride/bus stop crossing, installing RRFBs, drainage, lighting, and utility improvements. This project is on CDOT’s 10-year plan.

Project Benefits

  • Minimizes congestion
  • Increased pedestrian and cyclist safety
  • Restricted turn movements and center medians for vehicle safety

Work Schedule:

  • Work will last for approximately eight months
  • Working hours are 7 a.m.-7 p.m. In order to accommodate commuter traffic, the project will perform roadway improvements between the hours of 8:30 a.m.-4 p.m. Monday-Friday
  • Some weekend work is expected

Traffic Impacts:

Motorists can expect the following impacts during the period of construction:

  • Lane closures in all four directions of US Highway 6 and Castle Valley Blvd.
  • Reduced speeds through the work zone
  • Refer to for real-time travel conditions and road closures

Work this Week & Lane ClosuresUS 6 New Castle Roundabout

Project Facts

  • Construction Cost: $7 Million
  • Contractor: Johnson Construction Inc.
  • Timeline: March to November 2024
  • Location: US 6 and Castle Valley Road/Spur Road 
    • Nearest Town/City: New Castle
    • Mile Point(s): MP 107.03 and MP 107.35
    • County: Garfield