U.S. Federal Route 51 runs north-south through Portage County. U.S. Rt. 51 passes through the following towns in Portage County. Bancroft Plover Stevens Point
U.S. Rt. 51 is multi-plexed in Portage County. Interstate 39, thoughout Portage County. U.S. Rt. 10, near Stevens Point.
Branches of U.S. Rt. 51 in Portage County. SB I-39/U.S. Rt. 51; EB U.S. Rt. 10 at Casimir Road. SB I-39/U.S. Rt. 51; EB U.S. Rt. 10 south of Sawmill Road. A BGS on EB U.S. Rt. 10. A BGS on EB U.S. Rt. 10.