The highway was maintained by the Wisconsin Department of Transportation (WisDOT), and it is now signed as County Trunk Highway BD (CTH-BD) by Racine and Kenosha counties.

After crossing into Brighton, WIS 75 passed through the community of Klondike and skirted the eastern edge of the Richard Bong State Recreation Area.

The route intersected WIS 142 northwest of the community of Brighton and continued northward into Racine County.

It passed through the community of Kansasville and crosses a Canadian Pacific Railway line before meeting WIS 11.

The original route followed present-day WIS 142 west before continuing south and west on present-day CTH-X, CTH-JB, and CRH-PH; the route between WIS 142 and CTH-PH was changed to 264th Avenue in 1935.