U.S. Federal Route 50 is the main east-west highway across Marion County. It is mostly a two-lane highway, except near Salem. U.S. Rt. 50 passes through the following towns in Marion County. Sandoval
Odin
Salem U.S. Rt. 50 is multi-plexed in Marion County. U.S. Rt. 51, at Sandoval.
U.S. Rt. 50 intersects the following highways in Marion County. U.S. Rt. 51, at Sandoval.
WB U.S. Rt. 50 near the Marion/Clinton County Line. A junction marker on EB U.S. Rt. 50/NB U.S. Rt. 51. EB U.S. Rt. 50 east of Sandoval. A BGS on NB I-57. WB U.S. Rt. 50 at I-57.