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Maple Dam Road over Blackwater River

Dorchester County, Maryland · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Maple Dam Road over Blackwater River in Dorchester County, Maryland, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1997, making it 28 years old at the 2025 inventory.
It carries about 645 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 35 of the 47 inventoried bridges in Dorchester County rated fair (74.5%); 5 (10.6%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Superstructure	7	Good condition
Substructure	6	Satisfactory condition

Source: FHWA National Bridge Inventory, 2025 data as reported by the Maryland department of transportation.

Bridge	Built	Vehicles/day	Condition
US 50 over Nanticoke River	1990	28,510	Fair
US 50 over Choptank River	1987	27,191	Fair
US 50 EB over Md 331 & Dp & L RR	1990	24,661	Good
US 50 WB over Md 331 & Dp & L RR	1990	24,661	Good
US 50 WB over Big Mill Pond	1996	23,981	Fair
US 50 EB over Big Mill Pond	1967	23,981	Fair