Traffic Signal Upgrades in Broomfield, Boulder & Jefferson Counties

Work This Week
9 p.m. - 5:30 a.m.
September 23-27

  • CO 7 from mile point (MP) 61.88 to MP 67.75 and MP 229.09 to MP 229.10: North and southbound single lane and shoulder closure.
  • US 287 from MP 298.37 to MP 303.03: North and southbound single lane closure and shoulder closure.
  • CO 128 from MP 3.94 to MP 7.66: East and westbound single lane and shoulder closure.

Project Facts

  • Cost: $1.8 million
  • Contractor: Interface Communications 
  • Timeline: April-July 2019
  • Location: US 287, CO 7 and CO 128

In April, crews began modernizing 35 traffic signals on US 287, Colorado Highway 7 and CO 128 in Broomfield, Boulder and Jefferson counties.

Work includes:

  • removing and replacing outdated signal-controller cabinets and fiber optic cable;
  • installing new vehicle detectors, conflict monitors and closed circuit televisions; and
  • upgrading the communications at the intersection from serial to ethernet.

In addition to improving safety, the upgrades will help improve real-time traffic monitoring.

Schedule & Traffic Impacts

  • Expect single-lane closures from 9 p.m. to 5 a.m. Sunday through Thursday.
  • Expect shoulder closures from 6 a.m. to 6 p.m. Monday through Friday.
  • Crews will work on two intersections at a time at the following locations:

CO 128/120th Avenue

  • McCaslin Boulevard
  • Indiana Street, Ridge Parkway
  • Eldorado Boulevard
  • Simms Street
  • Interlocken Loop at Network Parkway, Interlocken Parkway, and Airport Way/ Interlocken Boulevard.

US 287/112th Street

  • West Midway Boulevard
  • 6th Avenue 10th Avenue
  • Miramonte Boulevard
  • Northwest Parkway Eastbound Ramp/ Dillion Road
  • Northwest Parkway Westbound Ramp/ Dillion Road
  • Campus Drive/South Point Drive
  • CO 42/Empire Road
  • Public Road

US 287/107th Street

  • South Boulder Road

CO 7/Baseline Road

  • US 287 Crossing Drive
  • Carr Avenue 11th Street
  • Public Road/City Park Gough Avenue
  • School Crossing 119th Street County Line Road
  • Lowell Boulevard/Bonanza Drive Vista Parkway
  • Mountain View Boulevard
  • Sheridan Parkway
  • Huron Street West
  • Huron Street East

CO 7/Baseline Road (Exit 229)

  • Interstate 25 Southbound Ramp
  • I-25 Northbound Ramp

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