The Emlenton Low Level Bridge is a 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:...

 that crosses the Allegheny River

Allegheny River

The Allegheny River is a principal tributary of the Ohio River; it is located in the Eastern United States. The Allegheny River joins with the Monongahela River to form the Ohio River at the "Point" of Point State Park in Downtown Pittsburgh, Pennsylvania...

 in Emlenton, Pennsylvania

Emlenton, Pennsylvania

Emlenton is a borough located mostly in Venango County, in the southeastern corner of the county, with a small portion located in Clarion County in Pennsylvania. The population was 784 at the 2000 census...

. It connects two separate portions of the borough in Venango

Venango County, Pennsylvania

Venango County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 54,984. Its county seat is Franklin.-History:Venango County was created on March 12, 1800 from parts of Allegheny and Lycoming Counties...

 and Clarion Counties

Clarion County, Pennsylvania

As of the census of 2000, there were 41,765 people, 16,052 households, and 10,738 families residing in the county. The population density was 69 people per square mile . There were 19,426 housing units at an average density of 32 per square mile...

. Originally, an 1893 truss bridge

Truss bridge

A truss bridge is a bridge composed of connected elements which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges...

 stood on the site, which replaced several previous wooden structures; the modern bridge was constructed in 1987. This bridge is dwarfed by its more famous nearby cousin, the 1968 Emlenton Bridge

Emlenton Bridge

The Emlenton Bridge is a steel deck truss bridge that spans the Allegheny River just south of the town of Emlenton, Pennsylvania at approximately mile marker 44.4 on I-80...

 along Interstate 80

Interstate 80

Interstate 80 is the second-longest Interstate Highway in the United States, following Interstate 90. It is a transcontinental artery running from downtown San Francisco, California to Teaneck, New Jersey in the New York City Metropolitan Area...

.