Wisconsin uses letters as route designations for its county roads. Routes may be labeled with a single letter (CTH-H), double letter (CTH-LL or CTH-AB) or triple letter (CTH-BBB). Roads are usually named sequentially, though there is leeway to have the letter designation stand for the initials of a road, geographical feature, political division (such as CTH KR along the Kenosha/Racine county line) or in honor of a person. [1]