Old Arch Bridge, Lewistown, Pennsylvania
historical marker
In Lewistown, Mifflin County, Pennsylvania, a historical marker stands for the Old Arch Bridge. This marker was erected in 1947 by the Pennsylvania Historical and Museum Commission. The Old Arch Bridge, a stone arch structure, was built in 1813 by Philip Diehl. It spans Jack's Creek and formed part of the original Harrisburg to Pittsburgh Turnpike. This bridge is considered the oldest of its type in central Pennsylvania. It is a single-span bridge and notably lacks a keystone in its design. In 1850, the bridge gained recognition when it was depicted in a lithograph by Currier and Ives. The Old Arch Bridge was listed on the National Register of Historic Places in 1979. It received repairs in 1930 and 1957, followed by a comprehensive restoration in 2006. Today, the bridge is accessible to pedestrians and is part of a local park. The Old Arch Bridge represents a significant example of early 19th-century transportation infrastructure.