I-70 Resurfacing from Chief Hosa to Colfax

About the Project

This is a federally-funded resurfacing project designed to improve safety, travel time reliability and mobility along this 10-mile stretch of the I-70 mountain corridor.

Work includes full width milling and overlay, and replacing guardrail from Chief Hosa (Exit 254) to Morrison (Exit 259) and repairing two bridge decks at Morrison/US 40. Other work includes installing a new drainage system from Morrison to Lookout Mountain, and adding variable speed limit signs and message boards on eastbound I-70 from Genesee Park (Exit 254) to Colfax (Exit 262).

Project Benefits

  • Improve safety by replacing deteriorating pavement for a smoother driving experience, and installing new safety guardrail
  • Increase the lifespan of two bridge structures at Morrison (Exit 259) by repairing both bridge decks
  • Improve travel time reliability and mobility by Installing dynamic speed limit signs and message boards on eastbound I-70 from Genesee Park (Exit 254) to Colfax (Exit 262)

Work Schedule

  • Work began in mid-August and is expected to last until late 2025
  • Project hours will be split between two shifts, from 7 p.m. to 5 a.m. Sunday to Thursday and 7 a.m. to 7 p.m. Monday to Friday
  • Hours will be adjusted during the winter months
  • CDOT anticipates full completion by late 2025

Traffic Impacts

  • Ramp closures will exist on an intermittent basis during overnight hours from Sunday to Thursday, as needed
  • These ramps include on and off ramps in both directions of I-70 from the Colfax exit (Exit 262) to Chief Hosa (Exit 253)
  • Motorists can expect overnight single and double lane closures in both directions of I-70 within the project limits from Sunday to Thursday, except on holidays
  • Intermittent overnight lane closures may also exist on the weekends
  • Speeds are reduced to 55 MPH on westbound I-70 from Morrison to Lookout Mountain
  • Traffic shifts and delays can be expected
  • Shoulder closures will be taken during daytime and overnight hours
  • A 12-foot width restriction is in place
  • Signs and construction devices are present to alert motorists to lane closures, traffic shifts and other work zone restrictions
  • Nearby impacts include the I-70 Floyd Hill project, with travel delays and lane closures from Beaver Brook (Exit 248) to Idaho Springs (Exit 241)
  • Refer to COtrip.org for real-time travel conditions and road closures

Work this Week & Lane Closures
I-70 Resurfacing Chief Hosa to Colfax

Project Facts

  • Construction Cost: $34.7 Million
  • Contractor: Martin Marietta
  • Timeline: August 2024 to November 2025
  • Location: I-70 from Chief Hosa (Exit 253) to US 6/Colfax (Exit 262)
    • Nearest Towns/Cities: Genesee and Golden
    • Mile Point(s): MP 252 to 262
    • County: Jefferson
I-70 Resurfacing from Chief Hosa to Colfax Project Map
I-70 Resurfacing from Chief Hosa to Colfax Project Location