The Hennepin Avenue Bridge is the structure that carries Hennepin County State Aid Highway 52, Hennepin Avenue

Hennepin Avenue

Hennepin Avenue is a major street in Minneapolis, Minnesota, United States. It runs from Lakewood Cemetery , north through the Uptown District of Southwest Minneapolis, through the former "Bottleneck" area west of Loring Park, through the North Loop in the city center, to Northeast Minneapolis and...

, across the Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

 in Minneapolis, Minnesota

Minneapolis, Minnesota

Minneapolis , nicknamed "City of Lakes" and the "Mill City," is the county seat of Hennepin County, the largest city in the U.S. state of Minnesota, and the 48th largest in the United States...

 at Nicollet Island

Nicollet Island

Nicollet Island is an island in the Mississippi River just north of downtown Minneapolis, Minnesota, named for cartographer, Joseph Nicollet. DeLaSalle High School and the Nicollet Island Inn are located there, as well as three multi-family residential buildings and twenty-two restored...

. Officially, it is the Father Louis Hennepin Bridge, in honor of the 17th-century explorer Louis Hennepin

Louis Hennepin

Father Louis Hennepin, O.F.M. baptized Antoine, was a Catholic priest and missionary of the Franciscan Recollect order and an explorer of the interior of North America....

, who was the first European to discover the Saint Anthony Falls

Saint Anthony Falls

Saint Anthony Falls, or the Falls of Saint Anthony, located northeast of downtown Minneapolis, Minnesota, was the only natural major waterfall on the Upper Mississippi River. The natural falls was replaced by a concrete overflow spillway after it partially collapsed in 1869...

 a short distance downriver. Two of the three previous structures have been suspension bridge

Suspension bridge

A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. Outside Tibet and Bhutan, where the first examples of this type of bridge were built in the 15th century, this type of bridge dates from the early 19th century...

s, while a third—which existed nearly a century—was composed of steel

Steel

Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...

 arch

Arch

An arch is a structure that spans a space and supports a load. Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture and their systematic use started with the Ancient Romans who were the first to apply the technique to a wide range of structures.-Technical aspects:The...

 spans. The original crossing, which opened as a toll bridge

Toll bridge

A toll bridge is a bridge over which traffic may pass upon payment of a toll, or fee.- History :The practice of collecting tolls on bridges probably harks back to the days of ferry crossings where people paid a fee to be ferried across stretches of water. As boats became impractical to carry large...

 on January 23, 1855, is believed to have been the first permanent span across the Mississippi at any point. Other bridges were completed in 1876, 1891, and most recently 1990. Today, the bridge's main span is 625 feet (190 meters) in length, making it rather small by modern standards.

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