This well-preserved trace of the Mullan Road winds its way around a rocky point just west of Alberton, Montana. You can still walk through the narrow gaps in the large rocks blasted by Mullan's crews. Between the gaps, the road is still supported by abutments created from hand-lain rock.
The Montana Department of Transportation has installed several interpretive signs along the route.
You can walk back on the Hiawatha Trail, the old Milwaukee Railroad that has been converted to a trail.
To access the trailhead, take the western-most Alberton exit off of Interstate I-90. Find your way to the west-bound on ramp, and then take the access road that starts there. When the road turns up Negro Gulch, named
Nigger Gulch during Mullan's time, take the one-lane gravel road west. The trailhead is about 1.5 miles at the end of that road.
DO NOT attempt to access the trail from the Albertson Rest Area Eastbound which is between the freeway and the river.