Casselman's Bridge, National Road
|Nearest city:||Grantsville, Maryland|
|Added to NRHP:||October 15, 1966|
|Designated NHL:||29 January 1964|
|Casselman River Bridge State Park|
|Maryland State Park|
Casselman River Bridge in 1933
|Elevation||2,113 ft (644 m) |
|Area||4 acres (1.6 ha) |
|Owner||Maryland Department of Natural Resources|
|IUCN category||V - Protected Landscape/Seascape|
|Nearest city||Grantsville, Maryland|
|Website: Casselman River Bridge State Park|
Casselman Bridge, also known as Casselmans Bridge or Castleman's Bridge, was completed in 1811 and opened for traffic in 1813 to carry the National Road across the Casselman River near Grantsville in western Maryland. The bridge was built to aid in the westward movement through the wilderness west of Cumberland. The 354 feet (108 m) long stone arch bridge spans 48 feet (15 m) with a 30-foot (9.1 m) high arch.
A historic marker is posted on both ends of the bridge and reads:
"Erected 1813 by David Shriver, Jr., Sup't of the "Cumberland Road" (The National Road). This 80 foot span was the largest stone arch in America at the time. It was continuously used from 1813 to 1933."
Rehabilitation and Preservation 
In the 1940s and early 1950s efforts were made to preserve the bridge. Sections of the bridge had started to crumble and fall apart. The bridge was patched and preserved as well as possible at the time. In 1979 the bridge was inspected structurally and rehabilitation plans were designed by Wallace, Montgomery & Associates, LLP to help save the structure and return it to its original state.
Casselman River Bridge State Park 
The bridge and surrounding 4 acres are preserved as Casselman River Bridge State Park. The bridge is open to pedestrians, and there are fishing opportunities in Casselman River.
Historic Stanton's Mill is adjacent to the park.
Photo gallery 
- "National Register Information System". National Register of Historic Places. National Park Service. 2008-04-15.
- "Casselmans Bridge, National Road". National Historic Landmark summary listing. National Park Service. Retrieved 2008-06-09.
- "Casselman Bridge". Geographic Names Information System, U.S. Geological Survey. 1996-12-04. Retrieved 2009-07-18.
- "Casselman River Bridge State Park". Maryland Department of Natural Resources. Retrieved 2009-07-18.
- Joseph Scott Mendinghall (May 3, 1976). PDF (32 KB). National Park Service. and PDF (32 KB)
- "Maryland Historical Trust". National Register of Historic Places: Properties in Garrett County. Maryland Historical Trust. 2008-06-08.
- Historical marker database entry
- Casselman River Bridge State Park - official site
- Maryland Department of Natural Resources, Casselman River Bridge State Park
- Casselman Bridge, National Road, Garrett County, including photo in 1996, at Maryland Historical Trust
- River Road Bridge, Crossing Casselman River on Casselman River Road, Grantsville vicinity, Garrett County, MD: 18 photos, 15 data pages, 3 photo caption pages, at Historic American Engineering Record