Claysville S Bridge

"S" Bridge
U.S. National Register of Historic Places
Pennsylvania state historical marker
Washington County History & Landmarks Foundation Landmark
Eastern end of the bridge
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Nearest city	Washington, Pennsylvania
Coordinates	40°8′22″N 80°21′0″W / 40.13944°N 80.35000°W / 40.13944; -80.35000Coordinates: 40°8′22″N 80°21′0″W / 40.13944°N 80.35000°W / 40.13944; -80.35000
Area	1 acre (0.40 ha)
Built	1818
NRHP Reference #	75001676
Significant dates
Added to NRHP	April 04, 1975
Designated PHMC	May 28, 1947

The Claysville "S" Bridge is a historic S bridge in Washington County, Pennsylvania. The bridge is made of stone and was a part of the Cumberland Road (later National Road) and helped transport wagons and stagecoaches amid the American westward expansion in the early 19th century. It passes over Buffalo Creek.

In 1947, the Pennsylvania Historical and Museum Commission installed a historical marker noting the historic importance of the bridge. It is designated as a historic bridge by the Washington County History & Landmarks Foundation.