I-70 Vail Underpass

I70 UnderpassProjectLogo

Project Facts

  • Cost:
    $21.4 million
  • Average Annual Daily Traffic:
    29,000 (I-70)

Project Team

  • Contractor(s): Kraemer North America LLC

This project will:

  • Add an I-70 underpass near I-70 mile point 175, connecting the north and south frontage roads between the Main Vail and West Vail interchanges. (The project does not add additional I-70 exits/interchanges into the Town of Vail.)
  • Help relieve congestion at the interchanges and prevent vehicles from queuing at the I-70 exits at Main and West Vail.
  • Help reduce repetitive I-70 local traffic by providing a direct connection between the core resort village areas and the West Vail mall area.
  • Enhance multi-modal transportation options within the Town of Vail.
Phase 4 Map
Increased Roundabout Capacity

The frontage roads currently function as one-way only traffic though the project site. The traffic flow mirrors I-70—the north frontage road serves westbound traffic only, while the south frontage road serves eastbound only.

Apart from the project site, the frontage roads operate as normal two-way traffic.

Vail Town Center Roundabouts

Crews have re-implemented the two-lane configuration at the Vail Town Center roundabouts. The northbound lane beneath I-70 has been restriped to allow two lanes of traffic through the north teardrop roundabout, and then onto the I-70 westbound ramp.


Occasional lane closures are possible on I-70 throughout May to allow crews to restripe lanes, move barriers and reconfigure the frontage road traffic alignment.

Plan your drive using this project webcam. Select "Control" and then "Positions" to view construction from different angles.

Phase 4 will focus on the construction of the underpass roundabouts. The area beneath the underpass also needs to be fully built, including brick pavers, curb and gutters, and lighting elements.

The underpass will also feature elevated sidewalks, requiring the installation of pedestrian guardrails. There will also be finder detail work—namely landscaping and aesthetic components in 2017.

Anticipated work hours are 7 a.m. to 7 p.m. However, as all work is weather dependent, crews may need to do additional nighttime and/or weekend work to stay on schedule.

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