CO 170 Critical Culverts, Boulder County

Project Complete!

Work consisted of replacing a culvert with wing walls underneath the roadway and excavating and patching asphalt along the highway. 

Work took place at the intersection, with construction crews utilizing single lane closures and shoulder closures along CO 170 and Marshall Road.  

Project Facts

  • Cost: $679,000
  • Contractor: Tricon 2, LLC
  • Timeline: March through November 2023
  • Location:  CO 170
    • Mile Points: .6 to MP 3.3, 
    • County: Boulder
Project location map - CO 170 at MP 2Project location map - CO 170 at MP 2