Concrete Panel Replacement in Three Counties

Construction Complete, Interstates

Project Facts

  • Cost: $4 million
  • Contractor: Ralph L. Wadsworth Construction Company
  • Timeline: February 2020 - June 2021
  • Location: On various highway intersections in Adams, Arapahoe and Jefferson Counties

Parmalee Gulch Westbound

US 285 Parmalee Gulch Westbound

Project Complete!

In February 2020 the Colorado Department of Transportation will begin work to improve several different sections of roadway and intersections throughout Region 1. 

The majority of the project work will be completed at night with occasional daytime work. Depending on the project location this may involve, shoulder, on-ramp, single and double lane closures. Be sure to sign up for email notifications below to get up to date information on closures related to this project.

This project is part of CDOT’s “Whole System. Whole Safety.” initiative aimed at enhancing safety for Colorado’s traveling public. Work on hours will vary at each location and will be announced prior to starting.  

This project was contracted to Ralph L. Wadsworth Construction Company for $4 million.

Specific Locations Include:

  • Eastbound I-76 at 136th Avenue
  • Westbound I-76 at 136 th Avenue
  • I-70 at Bennett Ramps
  • SH 121 and Chatfield Intersection (from C-470 to Coal Mine)
  • US 285 from Mile Point 235.3 to Parmale
  •  US 285 from Parmalee to Mile Point 246.1
  • I-70 at Watkins Ramps
  • Westbound I-76 at 88th Avenue
  • SH 177 at Arapahoe
  • Eastbound I-70 at Garrison
  • Eastbound I-70 at SH 121
  • I-70 at Airpark Ramps
  • I-70 at Strasburg Ramps


Work at the various locations listed below will include:

  • concrete panel removal and replacement
  • joint sealing
  • dowel bar retrofit
  • full depth repair
  • asphalt resurfacing
  • pavement markings

Work Zone Safety

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution
  • 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.
  • Sign up for weekly project updates – please log onto the project web site and click on the Alerts
    Information on the Move, to “Subscribe to Project Updates.”