Northeastern Colorado Bridge Rehabilitation in Boulder County

Work this Week
July 5 - 9, 2022

Tuesday to Thursday - 9 p.m. to 5 a.m. nightly

  • A single lane closure will exist on Colorado Highway 157 at the approaches to the location of the Boulder bridge (MP 3.52) while crews begin patching the bridge deck.
  • Flaggers, signs and devices will exist to direct alternating southbound/northbound traffic through the single lane configuration.
  • Occasional closures will be in place on the road below the bridge.

About the Project:

This project entails repairing and making structural and safety improvements to two bridges In Boulder County. The Boulder bridge (Structure D-16-DG) on CO 157 will undergo deck repairs and expansion device and median curb replacement. Surface work includes polyester concrete overlay, new cover plates, concrete sealer and spall repairs. Maintenance work on the Lyons bridge (D-15-A) on CO 7 includes adding abutment protection riprap as a scour countermeasure.

Click here to view the latest Project Fact Sheet


Work Schedule

  • Work on the Boulder bridge is expected to begin at 9 p.m. on Tuesday, July 5 with an anticipated completion date of mid-November 2022.
  • Working hours are 9 p.m. to 5 a.m. Sunday to Thursday.
  • Lyons bridge: work will begin on August 1 with an anticipated completion date of late October.
  • Lyons bridge repairs will take place from 7 a.m. to 6 p.m. Monday to Friday
  • All constructions schedules are weather dependent and subject to change.

Traffic Impacts

Motorists can expect:

  • Boulder bridge: single lane closures and reduced speeds will be in place during overnight hours from July 5 until mid-November.
  • Flaggers and construction devices will be present as needed to direct alternating northbound/southbound traffic through the single lane configuration.
  • Occasional flagging will also be in place on the road below CO 157 during working hours
  • Lyons bridge: will be reduced to one lane, and traffic will be under alternate flow controlled by temporary traffic signals.

Project Facts

  • Cost: $2.72 Million
  • Contractor: Structures, Inc
  • Timeline:  July to November 2022
  • Location: CO 157 (Mile Point 3.52) and CO 7 (MP 32.973) in Boulder County

Boulder County bridge rehab project map