The Marquette–Joliet Bridge is a bridge crossing the

Mississippi River The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...

, connecting Marquette, Iowa and

Prairie du Chien, Wisconsin Prairie du Chien ( ) is a city in Crawford County, Wisconsin, United States, and its county seat. The population was 5,506 at the 2020 census. Often called Wisconsin's second-oldest city, Prairie du Chien was established as a European settlemen ...

. 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, about to the north upstream, and the Dubuque-Wisconsin Bridge some south. The bridge carries U.S. Route 18 from

Iowa Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...

Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...

. The design of the bridge is a cable-supported

tied arch bridge A tied-arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch(es) are borne as tension by a chord tying the arch ends rather than by the ground or the bridge foundations. This strengthened chord may be the deck ...

, with the two ends of the arch terminating at

abutments An abutment is the Bridge#Structure types, substructure at the ends of a bridge Span (architecture), span or dam supporting its Bridge#Structure types, superstructure. Single-span bridges have abutments at each end that provide vertical and l ...

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 sou ...

References

{{DEFAULTSORT:Marquette-Joliet Bridge 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

See also

References