I-70 Improvements from Frisco to Silverthorne

Work this Week

Nov. 2021

Crews have finalized work for the week of Thanksgiving and will resume on Monday, November 29th from 7 a.m. to 5 p.m. During working hours, motorists should plan for additional travel time when traveling on I-70 westbound between the Eisenhower Tunnel and Silverthorne.

As weather patterns change, so will the days and hours of work to advance the project to completion. Travelers are encouraged to check https://www.cotrip.org for real-time road conditions and the latest information for this and other construction projects.

The work remaining on the I-70 re-paving project is weather dependent and consists of striping, guardrail concrete transitions and erosion curbs under the guardrail.

Traffic impacts

  • Working hours from 7:00 a.m. to 5:00 p.m.
  • One lane open to traffic westbound from Mile post 202.50 to MP 208.50 during work hours
  • Eastbound traffic not affected
  • Two westbound lanes of traffic open during non-working hours
  • During work hours, traffic will move slowly through the project area
  • Shoulder closures  

Project Proximity Alert

Two more Summit County projects are happening in close proximity. Each have their own prime contractors and construction teams. More information on these projects can be found on the project specific websites.

Other Summit County Projects:

About the Project:

The Colorado Department of Transportation and prime contractor, United Companies, will begin construction on westbound lanes from Silverthorne to Frisco along I-70 starting the first week of May. Work is expected to go through late fall. The project will span for approximately five miles from MM 203 to MM 207. Work will include the following items:

  • Repaving all westbound lanes in the construction zone
  • Removal and replacement of deteriorating portions of concrete bridge decks (will improve the bridge’s integrity and longevity)
  • Upgrades to existing guardrail (new features will help prevent future slope erosion)

Why change the hours?

The project had been paused for approximately two weeks after a fatal night time crash in the project limits on Tuesday, Oct. 5. The crash required an extended westbound I-70 closure and was caused by a tractor trailer traveling above the posted speed limit. The driver died in the crash and at least one construction worker was severely injured. The crash came after ongoing efforts to decrease incidents of speeding on the I-70 corridor west of the Eisenhower Johnson Memorial Tunnels.


Keep Speeds Down in Work Zone

CDOT asks motorists to go slow through the cone zone on the construction project, by following posted lowered speed limits and watching for the merge point. Westbound travelers should anticipate merging to one lane.


Alternate Route

Travelers can use US 6 Loveland Pass as an alternate route, but should be prepared for remote, mountainous terrain with limited services.


Travel Impacts

  • Working hours from 7:00 a.m. to 5:00 p.m.
  • One lane open to traffic westbound from Mile post 202.50 to MP 208.50 during work hours
  • Eastbound traffic not affected
  • Two westbound lanes of traffic open during non-working hours
  • During work hours, traffic will move slowly through the project area
  • Shoulder closures  

Project Facts

  • Cost: $5.9 million
  • Contractor: United Companies
  • Timeline: May - October 2021
  • Location: I-70 from the Town of Frisco to the Town of Silverthorne

I-70 Aerial View at Dillon Reservoir