The Rock Bottom Bar is located at 123 West Milwaukee Street in Jefferson, Wisconsin.  We're on the east side of the river. 

If you are coming from downtown Jefferson, we are next to the scenic walk bridge on Milwaukee Street. 

If you're driving from the west, come to Jefferson on Highway 18.  Just after the big bridge, turn right (south) on Main Street.  One block later, turn right on Milwaukee Street. We are located next to the river on the north side of W. Milwaukee Street.

If you're coming from Milwaukee on Highway 18, turn left (south) on Main Street and take the first right (west) on Milwaukee Street. We are located next to the river on the north side of W. Milwaukee Street. 

Note that both Mapquest and Google Maps show the Rock River in the wrong place.  They both show the river a half-block west of where it is.