The Marquette–Joliet Bridge is a bridge crossing the

Mississippi River The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it f ...

, connecting

Marquette, Iowa Marquette is a city in Clayton County, Iowa, United States. The population was 429 at the time of the 2020 census, up from 421 in 2000. The city, which is located on the Mississippi River, is named after Jesuit missionary Jacques Marquette, who al ...

and

Prairie du Chien, Wisconsin Prairie du Chien () is a city in and the county seat of Crawford County, Wisconsin, United States. The population was 5,506 at the 2020 census. Its ZIP Code is 53821. Often referred to as Wisconsin's second oldest city, Prairie du Chien was esta ...

. Local residents refer to the bridge as the Prairie Bridge or the Marquette Bridge; both terms are used equally. The structure is an automobile bridge about three lanes wide, and is designed to accept

Jersey barrier A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic. It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resu ...

s for deck service. It is located between the

Black Hawk Bridge __NOTOC__ The Black Hawk Bridge spans the Mississippi River, joining the town of Lansing, in Allamakee County, Iowa, to rural Crawford County, Wisconsin. It is the northernmost Mississippi River bridge in Iowa. Named for Chief Black Hawk, it is p ...

, about to the north upstream, and the Dubuque-Wisconsin Bridge some south. The bridge carries

U.S. Route 18 U.S. Route 18 (US 18) is an east–west U.S. highway in the Midwestern United States. The western terminus is in Orin, Wyoming at an interchange with Interstate 25. Its eastern terminus is in downtown Milwaukee, Wisconsin. However, US 18 run ...

from

Iowa Iowa () is a state in the Midwestern region of the United States, bordered by the Mississippi River to the east and the Missouri River and Big Sioux River to the west. It is bordered by six states: Wisconsin to the northeast, Illinois to the ...

Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...

. The design of the bridge is a cable-supported

tied arch bridge A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such grea ...

, with the two ends of the arch terminating at

abutments An abutment is the substructure at the ends of a bridge span or dam supporting its superstructure. Single-span bridges have abutments at each end which provide vertical and lateral support for the span, as well as acting as retaining walls ...

located in the middle of the river. In the winter after its opening, the bridge developed several cracks and had to be closed for repair. In more recent years, the approach on the Iowa side of the bridge was rebuilt as part of the U.S. 18 bypass that was built around Marquette and

McGregor, Iowa McGregor is a city in Clayton County, Iowa, United States. The population was 742 at the time of the 2020 census. McGregor is located on the Mississippi River across from Prairie du Chien, Wisconsin. Pike's Peak State Park is located just south ...

References

Bridges over the Mississippi River Bridges completed in 1975 Tied arch bridges in the United States Road bridges in Iowa Road bridges in Wisconsin U.S. Route 18 Bridges of the United States Numbered Highway System Bridges in Clayton County, Iowa Interstate vehicle bridges in the United States {{Iowa-bridge-struct-stub

See also

References