May 2025
The Montana Department of Transportation (MDT) is continuing progress on the North of Stevensville – North project along the Eastside Highway (Secondary 203).
Utility relocation work is expected to begin summer 2025, and right-of-way efforts are expected to conclude by July 2025. Construction is tentatively scheduled to begin in spring 2026, weather and other factors permitting.
This project will reconstruct approximately 6.0 miles of roadway north of Stevensville to enhance safety and traffic flow. Upgrades will include a center left-turn lane, widened shoulders, new flattened roadside slopes, drainage improvements, new wildlife crossings, a large-radius curve at Rathbun Lane, and a four-legged roundabout at Ambrose Creek Road.
More details will be shared as construction approaches. Travelers can view traffic updates and statewide road conditions on the MDT 511 map: https://www.511mt.net
Project Overview
STPS 203-1(15)4
North of Stevensville - North
UPN 6138000
The project is located on Secondary-203 (Eastside Highway) and begins at Reference Post (RP) 4.0, about 3.7 miles north of Stevensville, and about 0.1 miles south of Wildfowl Lane and Moiese Lane. It extends northerly 5.8 miles to RP 10.1, about 0.2 miles south of Hidden Valley Road. This project will tie to the Florence – East project that was constructed in 2014.
The project will reconstruct the road to a 44-ft. top width that will provide two 12-foot travel lanes, a 12-foot center/left turn lane, and two 4-foot shoulders. Roadside slopes and ditches will be revised to improve safety and the vertical alignment and drainage features will be upgraded throughout the project. The existing 90° horizontal curves at Rathbun Lane and Ambrose Creek Road will be replaced with a large radius curve at Rathbun Lane, and a 4-legged roundabout at Ambrose Creek Road. A graded platform for a future shared use path will not be included.
The project will require extensive right-of-way acquisition and utility relocation.
