US 287 Intersection Improvements in Broomfield County

About the Project

This project aims to enhance safety and optimize traffic flow across four intersections on US 287.

The primary scope of work includes:

  • Widening lanes
  • Adding turn lanes
  • Improving lane configurations at the intersections to improve capacity and traffic flow

Other work includes:

  • Installing medians
  • Adding pedestrian crosswalks
  • Installing new signal heads at two of the four intersections to accommodate the new lanes

Project Facts

  • Construction Cost: $1.95 million
  • Contractor: Villalobos Concrete, Inc.
  • Timeline: September 2026 to December 2026
  • Location: Highway(s) and specific location 
    • Nearest Town/City: Broomfield
    • Mile Point(s): MP 296.119 to MP 299.356
    • County: Broomfield
Map of locations and limits of construction for the US 287 Intersection Improvements project in Broomfield County.
Map of locations and limits of construction for the US 287 Intersection Improvements project in Broomfield County.

Project Benefits

  • Improve mobility and increase traffic capacity by providing additional turn lanes
  • Enhance safety and accessibility through new pedestrian sidewalks 
  • Optimize traffic flow by installing new signal heads

Work Schedule

  • Work is set to begin Sept. 1, with anticipated completion by December 2026.
  • Working hours will be split between daytime (7 a.m. to 7 p.m. Monday to Friday) and overnight shifts (7 p.m. to 6 a.m. Sunday to Thursday)
  • Actual working hours may vary. Some weekend work is also expected

Traffic Impacts

Motorists can expect the following traffic impacts during construction:

  • US 287 Northbound (CO 121 to Dillon Road): Single lane closures from 6 p.m. to 6 a.m. weekdays and 7 p.m. to 10 a.m. weekends
  • US 287 Southbound (Dillon Road to CO 121): Single lane closures from 10 a.m. to 1 p.m. and 7 p.m. to 6 a.m. weekdays, and 7 p.m. to 10 a.m. on weekends
  • US 287 Eastbound (West 120th Avenue & Sheridan Boulevard): Single lane closures from 9 a.m. to 3 p.m. and 6 p.m. to 6 a.m. weekdays, and anytime on weekends
  • CO 121 Northbound: Single lane closures from 9 a.m. to noon and 7 p.m. to 6 a.m. on weekdays, and from 8 p.m. to 10 a.m. on weekends
  • CO 121 Southbound: Single lane closures from 10 a.m. to noon and 6 p.m. to 6 a.m. weekdays, and from 8 p.m. to 10 a.m. on weekend
  • Full access to roadways, area businesses, sidewalks and driveways will be maintained
  • Refer to COtrip.org for real-time travel conditions and road closures