United States Highway 18 (US 18), an east-west route, is one of the original United States highways of 1926.

Termini

As of 2004, the highway's eastern terminus is in Milwaukee, Wisconsin. Its western terminus is in Orin, Wyoming at an interchange with Interstate 25.

Principal Cities

• Milwaukee, Wisconsin
• Madison, Wisconsin
• Mason City, Iowa

States Traversed

The highway passes through the following states:

• Wisconsin
• Iowa
• South Dakota
• Wyoming

Related US Routes

• U.S. Highway 118
• U.S. Highway 218, despite its even number, runs north and south. The parent and child meet in Charles City, Iowa.

Sources

• Endpoints of US highways (http://www.geocities.com/usend1019/End018/end018.htm) (used with permission)
• http://www.us-highways.com/