Wisconsin Highway 61
State Trunk Highway 61 was a number assigned to a state highway in the U.S. state of Wisconsin. It traveled roughly along:
- present-day Wisconsin Highway 81 from Cassville to Beloit. From 1924 to 1926, WIS 61 extended westward via present-day WIS 81.
- the pre-Interstate alignment of Wisconsin Highway 15 from Beloit to Milwaukee. WIS 61 had always follow at least a portion of what later became WIS 15. WIS 15 had plenty of alterations before being superseded by I-43 in 1988.