Wisconsin State Route 100 runs north, south, east, and west in the Greater Milwaukee Area. This provides a surface belt-loop in the county. WI St Rt 100 passes through the following towns in Milwaukee County. Oak Creek
Franklin Hales Corners Greenfield
Brown Deer River Hills WI St Rt 100 is multi-plexed in Milwaukee County. U.S. Rt. 45, from Franklin to Greenfield.
U.S. Rt. 45, from Milwaukee to the Milwaukee/Waukesha County Line. U.S. Rt. 41, from Milwaukee to the Milwaukee/Waukesha County Line.