Illinois-Kentucky

The Interstate 24 Bridge is a two-span tied arch bridge

Tied arch bridge

A tied-arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch, or top chord, are borne as tension by the bottom chord , rather than by the ground or the bridge foundations...

 that carries I-24 across the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

. Built in 1973, it is 5623.4 feet (1,714 m) in length. The bridge is one of two that connects the Metropolis, Illinois

Metropolis, Illinois

Metropolis is a city located along the Ohio River in Massac County, Illinois, in the United States. As of the 2000 census, the city population was 6,482...

 area with Paducah, Kentucky

Paducah, Kentucky

Paducah is the largest city in Kentucky's Jackson Purchase Region and the county seat of McCracken County, Kentucky, United States. It is located at the confluence of the Tennessee River and the Ohio River, halfway between the metropolitan areas of St. Louis, Missouri, to the west and Nashville,...

.

Tennessee

The Interstate 24 Bridge is a continuous box and plate girder bridge

Girder bridge

A girder bridge, in general, is a bridge built of girders placed on bridge abutments and foundation piers. In turn, a bridge deck is built on top of the girders in order to carry traffic. There are several different subtypes of girder bridges:...

 over the Tennessee River

Tennessee River

The Tennessee River is the largest tributary of the Ohio River. It is approximately 652 miles long and is located in the southeastern United States in the Tennessee Valley. The river was once popularly known as the Cherokee River, among other names...

. It is just slightly upstream from Nickajack Dam

Nickajack Dam

Nickajack Dam is a hydroelectric dam in Marion County in the U.S. state of Tennessee. It is one of nine dams on the Tennessee River owned and operated by the Tennessee Valley Authority, which built the dam in the mid-1960s to replace the outdated Hales Bar Dam upstream. The dam impounds the ...

 and within sight of the Marion Memorial Bridge.