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The Montana Department of Transportation (MDT), in partnership with the Federal Highway Administration (FHWA) and in coordination with Gallatin County, Bozeman, and Belgrade, developed a corridor study of the Frontage Road between Belgrade and Bozeman, Montana. The study began in June 2016 and was completed in May 2017.

The purpose of the study was to develop a comprehensive, long-range plan for managing the corridor and to determine what improvements can be made to improve the corridor based on identified needs, public and agency input, and financial constraints. The study identified feasible improvement options to address safety, operational, and geometrical concerns within the study area.

The study area included the Frontage Road beginning in Belgrade at the intersection of Main Street and Jackrabbit Lane and extended nine miles to the east to the Interstate 90, Exit 306, westbound ramps.

Final Corridor Study Report

Final Report
Appendix 1: Public Comments
Appendix 2: Consultation, Coordination, and Public Involvement
Appendix 3: Environmental Scan Report
Appendix 4: Existing and Projected Conditions Report
Appendix 5: Improvement Options Technical Memorandum