Mile 106 – S Bridge, Buffalo Twp., Washington County, Pa.

The S Bridge, Washington County, Pa.

An unusual form of bridge architecture exists along the National Road in Pennsylvania and Ohio – the ‘S’ bridge. These bridges are exactly what the name infers – they are shaped like an ‘S,’ apparently in an effort to save on materials.

The S Bridge in Pennsylvania is the only one of its kind in the state, and spans a small creek in western Washington County, just east of Claysville. The structure was built around 1818, and was eventually bypassed by newer infrastructure (like the fate of the Casselman River bridge in Maryland). In the case of ‘S’ bridges, as cars began to replace horses, and as those cars became faster, the curvature of those bridges posed a safety hazard as well.

The historical marker nest to Pennsylvania’s ‘S’ bridge.

Today, the bridge, its deck covered in grass, is still open to the public as a pedestrian path and is on the National Register of Historic Places. There is a parking lot north of the bridge on Pa.-221, and its a short walk to the bridge from the lot. The current U.S. 40 passes right beside the bridge, adjacent with its intersection with Pa.-221.

While Pennsylvania only has one such bridge, there are several remaining ‘S’ bridges in eastern Ohio. Jim Grey, who has been a frequent resource for this blog, has chronicled those structures. So until I get to Ohio (and even after), check out his blog.

Pennsylvania’s ‘S’ bridge spans a small creek in rural Washington County.

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One response to “Mile 106 – S Bridge, Buffalo Twp., Washington County, Pa.

  • Jim

    This bridge’s deck cracks me up. I always imagine the Pennsylvanila highway department worker coming home to his wife, who asks him what he did all day. “Oh, i mowed a bridge.”

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