Stone Arch Bridge, Lewistown, Pennsylvania
historical marker
The Stone Arch Bridge is located in Lewistown, Mifflin County, Pennsylvania, spanning Jack's Creek. This single-span stone arch bridge was constructed in 1813 by Philip Diehl. It formed a vital section of the Harrisburg to Pittsburgh Turnpike, with this part of the turnpike completed by 1818. The bridge is notable for being the oldest of its type in central Pennsylvania, and it lacks a keystone, a distinctive architectural feature. Its historical significance was recognized when it was featured in a Currier and Ives lithograph in 1850. The bridge was added to the U.S. National Register of Historic Places in 1979. After earlier repairs in 1930 and 1957, the Stone Arch Bridge underwent a full restoration in 2006. Today, it is part of a public park. In that same year, Mifflin County Commissioners erected a historical marker at this site. The bridge represents an important piece of early transportation history in the region.