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I-25/I-80 Interchange Project

The Wyoming Department of Transportation (WYDOT) is in the preliminary stages of design to reconstruct the I-25/I-80 interchange in Cheyenne.

Project Update March 2020:

Preparation of an Environmental Assessment (EA) and preliminary design are currently underway and nearing completion. The EA is anticipated to be made available for public comment in Summer 2020; preliminary design plans are also scheduled for Summer 2020. A schedule for the completion of the final project design, beyond the Grading Plans, is not available at this time. The public hearing is anticipated to occur during Summer 2020. WYDOT will make the EA available, and provide public hearing details, at least 15 days prior to the hearing date. The EA will be made available at viewing locations and through the project website. After the public hearing and 30-day comment period, WYDOT will respond to comments and the Federal Highway Administration (FHWA) will issue its decision. An FHWA decision, which is required prior to project construction, is anticipated in late 2020.

WYDOT is actively seeking federal funding for construction. Timing for project construction will depend on when WYDOT secures construction funding. The estimated cost for this project is between $207.2 million and $310.7 million. The project has been designed to be constructed in phases.

Project Description

The I-25/I-80 interchange is a transportation focal point that facilitates the movement of people and goods on a local, regional, and national level. With no major improvements made since its construction in the 1960s, the interchange needs to be brought up to current interstate safety and mobility standards. The project proposes a full replacement of the existing I-25/I-80 interchange, as well as a full replacement of the I-25/ Lincolnway interchange because of its proximity to the I-25/I-80 interchange

The purpose of the project is to improve safety, accommodate future traffic volumes, and support local development. Below is a 3D flyover showing the preliminary design of the interchange.

Take a closer look at the project study area using our Interactive Map. The interactive map includes environmental elements in the study area as well as preliminary design components of the interchange. The map also allows you to provide location specific feedback on the project.

Email the Project Team

Direct questions about the project to:

Andrea Allen - Project Manager

Tim Eversoll - Project Manager