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Spanning four acres and located in Garrett County, Casselman River Bridge State Park is east of Grantsville on U.S. Route 40. The beautiful, 80-foot stone arch bridge was part of the old National Road. When constructed in 1813, it was the largest of its kind in the world.
**Please Note: The Maryland Park Service has closed Casselman River Bridge State Park in Grantsville, due to safety concerns. Fencing and signs have been installed to prevent public access to the park, including a small portion of the Casselman River. The closure was put in place after the historic Casselman River Bridge was inspected by the Engineering and Construction unit of the Department of Natural Resources. Engineers noted cracking within the stonework, missing grout, and dislodged stones. The closure precedes a scheduled restoration and repair project that is expected to begin in 2024. This project will consist of the restoration and repair to the bridge structure, wall repairs, stone removal, and repair, repointing and pinning of the abutments/spandrels and barrel, epoxy injection of cracks in barrel stones, and repairs to a major portion of the roadway decking. The repairs are necessary to prevent failure of the bridge.**