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I-80 & US-40 | Summit County | Improved

I-80 & US-40 | Summit County | Improved

UDOT is planning upgrades to the eastbound I‑80 to US‑40 on-ramp in Summit County to improve traffic flow and safety near Kimball Junction. The project will add a 12‑foot eastbound auxiliary lane from the Kimball Junction on‑ramp to the Silver Summit off‑ramp. 

 

Project Overview

UDOT is planning upgrades to the eastbound I‑80 to US‑40 on-ramp in Summit County to improve traffic flow and safety near Kimball Junction. The project will add a 12‑foot eastbound merge lane from the Kimball Junction on‑ramp through the I-80 EB to US-40 EB interchange ramp and just beyond the US-40 EB Silver Summit off‑ramp. The additional lane will reduce congestion by expanding both freeways and the interchange ramp. Other improvements include:   

  • Installing new overhead signage 

  • Improving drainage to support stormwater management and roadway performance 

  • Improving snow removal by installing an additional camera to monitor snow on the US-40 WB to I-80 WB fly-over 

  • Improving lighting along the I-80 EB to US-40 EB interchange ramp 

This project is in the design phase, and construction is anticipated to begin in 2027. More information about construction timing and impacts will be shared as details are finalized.  

This project is part of a series of improvement projects along Parley's Canyon and the I‑80 corridor, where multiple upgrades are being coordinated to modernize the roadway and support future growth. More information on regional projects can be found on the Summit County & Parley's Canyon website. 

Project Map

Project map showing the I-80 and US-40 corridor in Summit County, Utah. A shaded orange project area follows I-80 east from Kimball Junction past Bitner Ranch Road, then continues south along US-40 near the I-80/US-40 interchange to Silver Summit Parkway. Nearby landmarks include Swaner Preserve & EcoCenter, Glenwild Golf Club, Trailside Park, and the Summit County Sheriff’s Department. A legend identifies the orange shading as the project area, and an inset map shows the project location within Utah. A north arrow is displayed in the upper right corner.

 

Project Timeline

  • Winter 2026 - Present: Design Phase 
  • Spring 2027 - Fall 2027: Construction

 

live
live

Design

The design process will wrap up at the end of 2026. 

planned
planned

Construction

Construction is anticipated to begin Spring 2027.

complete
complete

Project Milestones

Once a contractor is chosen, we will provide schedule and milestone updates. 

Contact Information

To contact the public information team with questions or concerns:

Hotline: 435-513-7776

Email: i80tous40improved@utah.gov

 

Stay Informed

Please subscribe to our project by contacting the public information team at the email address above and enter "Project Updates" in the subject line. We plan to send regular updates once in construction, anticipated in 2027.