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MissoulaLrgMontana Commercial Construction Contractors

Western Interstate is a full-service general commercial contractor and construction manager serving the Missoula Valley, Bitterroot Valley, Flathead Valley and Western Montana for more than 20 years. We can complete your project as a general contractor, a construction manager or in a design/build role, accepting full responsibility of your construction project from land purchase to owner occupancy.

Western Interstate was founded in 1987, and is currently led by Mark Quinn. Mark has decades of experience in commercial construction, including steel buildings and multi-family construction projects as well as an engineering background and skill in contract management. Western Interstate connects with a network of reputable sub-contractors and suppliers, to help drive construction projects to successful completion every time.

Western Interstate Construction has been a trusted partner on commercial construction projects for the University of Montana, Town Pump of Montana, Bonneville Power Administration and more. Visit our Projects page for more information.

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Based in Missoula, Montana, Western Interstate, Inc. is centrally located to complete projects throughout Western Montana and Northern Idaho and Eastern Washington.