(Musselshell River/101, 145', 1930) across Musselshell River E. of Roundup, Musselshell County, MT. US12 E. 16.5 miles from jct with US87 in Roundup, S. on Musselshell Rd. 0.15 miles to the bridge. (N46 30.514 W108 12.950) Photos by Jack & June Schmidt 7-24-13.