CDOT upgrading signals in Northwest Metro Area

April 24, 2019 -

BROOMFIELD/BOULDER/JEFFERSON COUNTIES—CDOT has begun a project to enhance safety and functionality at 35 intersections along US Highway 287, and Colorado highways 7 and 128.

Upgrades include modernizing traffic signal communications, from Serial to Ethernet, replacing outdated controller cabinets and fiber optic cables, and the installation of new vehicle detectors, conflict monitors and closed circuit televisions.  These improvements will help reduce potential vehicle conflicts by improving real-time traffic monitoring, allowing CDOT to modify signal timing, improve traffic flow, cut vehicle emissions, and help reduce driver stress and frustration.

Drivers are urged to slow down to the posted speed limit through the various work zones, which will consist of single lane closures Sunday through Thursday from 9 p.m. to 5 a.m., and shoulder closures Monday through Friday from 6 a.m. to 6 p.m. 

The following intersections will be updated, two locations at a time: 

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/Interstate 25 (Exit 229)

  • I-25 Southbound Ramp
  • I-25 Northbound Ramp

The $1.8 million project, contracted to Interface Communications of Boulder, is scheduled for completion in August 2019.

Safety Tips

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones; obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers; drive with caution.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts, and merge when directed to do so.
  • Be patient!

Stay Informed


CDOT has approximately 3,000 employees at its Denver headquarters and in regional offices throughout Colorado, and manages more than 23,000 lane miles of highway and 3,429 bridges. CDOT also manages grant partnerships with a range of other agencies including metropolitan planning organizations, local governments, and airports, and administers Bustang, the state-owned and operated interregional express service. Gov. Jared Polis has charged CDOT to further build on the state's intermodal mobility options.