The roadway passes the Iron River County Club as the highway begins to parallel the Iron River. M-189 follows Selden Road north through the southside of the city of Iron River, continuing as 4th Street into downtown. The trunkline ends at a junction with US 2 (Adams Street) in the middle of town.
The roadway passes by the Iron River County Club as the highway begins to follow the course of the Iron River. M-189 travels along Selden Road north through the southern part of Iron River, continuing on 4th Street into downtown. The main road ends at a junction with US 2 (Adams Street) in the center of town.