U.S. Route 18

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U.S. Route 18

Length:

1,043 mi^[1] (1,679 km)

Formed:

1926^[1]

West end:

I-25 at Orin, WY

Major
junctions:

I-29 near Worthing, SD

I-35 at Clear Lake, IA
I-39/I-90 at Madison, WI

East end:

Milwaukee, WI

United States Numbered Highways

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

1 Termini
2 States traversed
3 Related routes
4 References

[edit] Termini

As of 2006, the highway's eastern terminus is in downtown Milwaukee, Wisconsin. Its western terminus is in Orin, Wyoming at an interchange with Interstate 25.^[2] However, U.S. 18 is multiplexed with other U.S. routes from Mule Creek Junction, Wyoming to its stated terminus.

Historical note: US-18 was originally proposed also in Michigan from Detroit to Grand Haven. This stretch became US-16.

[edit] States traversed

Major cities
Hot Springs, South Dakota Canton, South Dakota Sheldon, Iowa Spencer, Iowa Algona, Iowa Clear Lake, Iowa Mason City, Iowa Charles City, Iowa Prairie du Chien, Wisconsin Madison, Wisconsin Waukesha, Wisconsin Milwaukee, Wisconsin

The highway passes through the following states:

[edit] Wyoming

U.S. 18 runs concurrently with U.S. Route 20 from Interstate 25 to Lusk, where U.S. 18 branches off to run concurrently with U.S. Route 85. At the unincorporated community of Mule Creek Junction in northeastern Niobrara County, U.S. 18 leaves U.S. 85. This ten-mile stretch from U.S. 85 to the South Dakota border is the only segment of U.S. 18 in Wyoming which is not co-signed with another highway.

[edit] South Dakota

U.S. 18 enters the state west of Edgemont. It passes through Hot Springs, the Pine Ridge Indian Reservation, the Rosebud Indian Reservation, Winner, and Gregory before crossing the Missouri River near Pickstown. East of the Missouri River, U.S. 18 passes through (or near) Lake Andes and Tripp before a brief multiplex with Interstate 29 near Worthing. East of I-29, U.S. 18 passes through Canton before crossing the Big Sioux River into Iowa.

[edit] Iowa

U.S. 18 enters Iowa via a Big Sioux River crossing west of Inwood. It is multiplexed with U.S. Route 71 through Spencer. U.S. 18 passes through Emmetsburg, Algona and Garner before intersecting Interstate 35 in Clear Lake. After a brief multiplex with I-35, U.S. 18 continues as a freeway bypassing Mason City to the south. At Charles City, U.S. 18 becomes a rural two-lane highway again, except for a brief multiplex with the U.S. Route 63 bypass of New Hampton. It passes through West Union, Postville, and Monona before crossing the Missisippi River into Wisconsin via the Marquette-Joliet Bridge near Marquette.

U.S. 18 is the designated route of the Avenue of the Saints between Clear Lake and Charles City.

[edit] Wisconsin

[edit] Related routes

U.S. Highway 118
U.S. Highway 218 runs north and south. The parent and child meet in Charles City, Iowa.

[edit] References

^ ^a ^b US Highways from US 1 to US 830 Robert V. Droz
^ Endpoints of US highways

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