Billings Bypass project logo

Project Overview

The Billings Bypass project is a six-phase project that will result in a new arterial roadway. The new road will begin at the Johnson Lane Interchange on Interstate 90 (I-90) in Lockwood, span the Yellowstone River, and connect to the Old Highway 312/US Highway 87 (US 87) intersection in Billings Heights. As of 2025, three of the six project phases are complete. The new river crossing will be available for public use via a temporary connection on Coulson Road and the newly reconstructed Five Mile Road to Old Highway 312 by July 3, 2025.

Map of Billings Bypass project
Click the image for a larger view of the map.

This project is led by the Montana Department of Transportation (MDT) in cooperation with the Federal Highway Administration (FHWA), Yellowstone County, and City of Billings. DOWL is the lead project engineer and public information coordinator, and Morrison-Maierle is the lead bridge engineer. Kittelson and Associates performed traffic engineering and operational analyses.

Current Status:

  • The Five Mile Road, Yellowstone River Bridge, and Railroad Overpass project segments are complete or nearing completion and will open to the public by July 3rd.
    close up Map of Billings Bypass project
    Click the image for a larger view of the map
  • The Johnson Lane Interchange segment design is complete. Meetings with property owners and stakeholders are ongoing; please get in touch with the project team by email or 406-294-9668 if you have any questions or comments. Construction is tentatively anticipated to begin in late 2025 or early 2026.
  • The design is in process for the Johnson Lane Interchange-Railroad Overpass project segment.
  • The final design of the Five Mile Road to US 87 project segment has begun.

Additional detail about each project segment is available on the Status / Schedule page.

UPN 4199