Illinois State Route 75 runs east-west across much of Northern Winnebago County. This highway is the main link between South Beloit, Rockton, and Northwestern Winnebago County. IL St Rt 75 passes through the following towns in Winnebago County. South Beloit
Rockton
Harrison
IL St Rt 75 is multi-plexed in Winnebago County. U.S. Rt. 51, near South Beloit.