US 85 and O Street Intersection Improvements

About the Project:

In June 2021, the Colorado Department of Transportation begins a 1.1-mile roadway and intersection improvement construction project on US 85 and O Street or Weld County Road 64 (WCR 64). Project improvements include a new spur road connecting US 85 and WCR 64, widening southbound US 85 to add left turn lane, and constructing new drainage and water quality features.

Castle Rock Construction Company of Colorado is the contractor for this $1.8 million project.


Work Schedule

  • Scheduled work: June 14 to Oct. 29, 2021
  • Working hours: 7 a.m. to 5 p.m., Monday through Friday
  • In special cases these hours and days may be extended
  • Occasional weekend work may occur

Traffic Impacts

  • Anticipate lane-closures and lane-shifts for the duration of the project. Notices will be provided.

Project Facts

  • Cost: $1.8 Million
  • Contractor: Castle Rock Construction Company of Colorado
  • Timeline: June to October 2021
  • Location: Northbound and southbound US 85 and O Street near Greeley in Weld County CO

US 85 and O Street Project Map