CO 157 Pavement Rehabilitation

About the Project

The Colorado Department of Transportation and prime contractor Acme Concrete Paving Inc., will be performing a concrete rehabilitation project on CO 157 (Foothills Parkway) in the City and County of Boulder. Construction will take place between CO 119 and Pearl Parkway (Mile Point 2.73 to MP 4.52.) 

Major work components will include:

  • Removal of existing concrete panels
  • Pouring and curing new concrete panels
  • Diamond grinding
  • Sign replacements
  • Guardrail upgrades

Work this Week & Lane Closures CO 157 Pavement Rehabilitation

Project Facts

  • Construction Cost: $4.3 million
  • Contractor: Acme Concrete Paving Inc.
  • Timeline: March 2026 to September 2026
  • Location: CO 157 
    • Nearest Town/City: Boulder
    • Mile Point(s): MP 2.1 to MP 4.53
    • County: Boulder
Map of the CO 157 Pavement Rehabilitation Project
Map of the CO 157 Pavement Rehabilitation project area from MP 2.1 to MP 4.53

Project Benefits

  • Prolong the service life of the roadway
  • Help resist weather and stress related deterioration
  • Reducing road irregularities through diamond grinding operations
  • Provide a smoother ride for motorists
  • Decrease general wear-and-tear on vehicles
  • Guardrail upgrades enhance driver safety throughout the project corridor

Work Schedule

  • General working hours will take place weekday nights from 7 p.m. to 7 a.m.
  • Additional daytime and weekend work is expected intermittently

Traffic Impacts

From April 15 to 20, 2026:

  • Wednesday and Thursday nights, April 15-16, 7 p.m. to 7 a.m.
    • Northbound CO 157 will be reduced to a single through-lane
    • The Pearl Street on-ramp to northbound CO 157 will be closed
      • Motorists will be detoured via Pearl Street west to 30th Street or east to 55th Street, then north to Valmont Street to access the on-ramp
    • No impacts are expected during daytime hours Wednesday through Friday.
  • Friday, April 17, at 9 p.m. through Sunday morning, April 19, at 4 a.m.
    • Full closure of northbound CO 157 at Pearl Street goes in effect
    • Traffic will detour off CO 157 at the Pearl Street exit, continue across Pearl Street and re-enter via the northbound on-ramp
    • Southbound lanes will remain open
  • Sunday morning, April 19, through Monday evening, April 20, 4 a.m. to 8 p.m.
    • Northbound CO 157 will be reduced to a single through-lane until 7 a.m. Monday
    • The Pearl Street on-ramp to northbound Colorado Highway 157 will remain closed with the same aforementioned detour in place until 8 p.m. Monday
  • Motorists traveling northbound on CO 157 and those using Pearl Street should expect up to 15 minute delays. Drivers are encouraged to use alternate routes over the weekend to avoid congestion
  • Uniformed traffic control officers will be on-site to assist with traffic flow. Drivers should slow down, watch for workers and equipment and maintain safe following distances
  • Refer to COtrip.org for real-time travel conditions and road closures
Map of the northbound road closure on CO 157 over Pearl Parkway and detour route
Map of the northbound road closure on CO 157 over Pearl Parkway and detour route.
Map of the Pearl Street to northbound CO 157 on-ramp closure and detour route
Map of the Pearl Street to northbound CO 157 on-ramp closure and detour route