Montana Highway 3

Montana Highway 3 is a state highway in Montana that links the Yellowstone River valley near Billings with the High Plains and the Missouri River corridor at Great Falls. The route traverses mixed agricultural, energy, and urban landscapes, connecting communities such as Laurel, Roundup, and Hobson. It intersects federal and state routes that form part of regional freight and passenger corridors serving Interstate 90, U.S. Route 87, and U.S. Route 191.

Route description

The highway begins near Billings at a junction with Interstate 90 and proceeds northwest through the Yellowstone River valley toward Laurel and Park County boundaries. Leaving the urbanized Billings metropolitan area, it climbs into plains adjacent to the Bighorn Basin and crosses agricultural landscapes associated with Montana State University Billings and rail corridors of the BNSF Railway. Continuing north, the route intersects U.S. Route 12 and traverses towns influenced by Powder River Basin energy development and state energy regulation. Approaching Roundup, the highway runs near Musselshell County and links with U.S. Route 87 and MT 200. Further north the road enters prairie and mixed-grass regions surrounding Hobson and agricultural communities supporting United States Department of Agriculture farm programs. The northern segment follows corridors used historically by Lewis and Clark Expedition routes and modern freight to Great Falls, terminating near the junction with U.S. Route 89 and access to Cascade County infrastructure.

History

The corridor reflects layered transportation history from Indigenous trails used by the Crow Nation and Sioux peoples through 19th-century exploration by Meriwether Lewis and William Clark. In the early 20th century federal initiatives such as the Federal Aid Road Act of 1916 and later the National Highway System designation shaped state investment that produced graded routes paralleling Northern Pacific Railway and Great Northern Railway alignments. During the New Deal era, programs overseen by the Civilian Conservation Corps and the Works Progress Administration improved segments that later became state highways. Post-World War II motorization and energy booms tied to Bureau of Land Management leasing and the Energy Policy Act of 1992 influenced reconstruction, while local governments including the Montana Department of Transportation implemented resurfacing and realignment projects to accommodate heavier freight from Agricultural Adjustment Act-era consolidation into larger farms and feedlots. Recent decades saw modernization tied to growth in Billings and industrial traffic to Great Falls air and rail facilities.

Major intersections

- Southern terminus: junction with I‑90 near Billings and access to Billings Logan International Airport. - Junction with US 12 providing connections toward Miles City and Helena. - Concurrency and intersections with US 87 near Roundup and links to Hardin and Livingston. - Connection to MT 200 facilitating east‑west travel to Great Falls and Missoula. - Northern terminus: approaches US 89 and distribution to Great Falls International Airport and Malta corridors.

Traffic and maintenance

Traffic volumes vary from urban commuter flows near Billings to lower Average Annual Daily Traffic (AADT) in prairie sections managed by the Montana Department of Transportation. Freight composition includes agricultural commodities tied to United States Department of Agriculture classifications, energy equipment from Powder River Basin operations, and intermodal cargo transferring to BNSF Railway terminals. Winter maintenance coordinates with county road crews in Yellowstone County and Cascade County; snow removal, chip seal, and asphalt overlays are scheduled under state pavement programs influenced by federal funding formulas from the Federal Highway Administration. Safety initiatives reference standards from the National Highway Traffic Safety Administration and include signage conforming to the Manual on Uniform Traffic Control Devices.

Future plans and improvements

Planned improvements prioritize pavement rehabilitation, bridge replacement, and safety upgrades funded through state transportation plans administered by the Montana Department of Transportation with potential grants from the Infrastructure Investment and Jobs Act. Projects under study consider freight bottlenecks linked to Port of Montana intermodal strategies and regional economic development tied to Montana Board of Oil and Gas Conservation permitting. Local stakeholders including county commissions and municipal governments in Billings and Great Falls have proposed intersection realignments, passing lanes, and wildlife crossings to reduce vehicle‑wildlife collisions, informed by studies from University of Montana and Montana State University. Long‑range planning integrates corridors with National Freight Strategic Plan priorities and may seek coordination with tribal governments such as the Crow Tribe of Indians for cultural resource protection.

Category:State highways in Montana