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Map showing the location of structurally deficient bridges in Allegheny County

Place Database

Structurally Deficient Bridges in Allegheny County, Pennsylvania
By Jenna DeAngelo, July 24, 2018

Allegheny County, Pennsylvania, has more structurally deficient bridges than any other county in the United States—201 of 1,250, or 16 percent. Improvements would cost at least $150 million.

Structurally deficient bridges are characterized by deteriorating conditions and reduced load-carrying capacity. Although this classification does not imply that a bridge is unsafe, it does indicate that the bridge likely requires significant repair and maintenance to remain in service and eventually may need major rehabilitation or replacement.

View the PDF version of this map for more detail and a key.

Source: The Place Database. www.lincolninst.edu/research-data/data/place-database