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Md 5 over Hilton Run

St. Mary's County, Maryland · rated Poor in the 2025 National Bridge Inventory

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

Md 5 over Hilton Run in St. Mary's County, Maryland, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1936, making it 89 years old at the 2025 inventory.
It carries about 8,010 vehicles a day (traffic count year 2009).
Its listed owner is the state highway agency.
It is one of 2 of the 50 inventoried bridges in St. Mary's County rated poor (4.0%); 2 (4.0%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 34 ft
Location	1.86 Miles N of Md 489
NBI structure number	100000180007010
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Md 4 over Kingston Creek	1980	26,801	Fair
Md 5 over St Marys River	1955	22,642	Fair
Md 5 over Mcintosh Run	1935	22,220	Fair
Md 5 over Branch of Mcintosh Run	2017	22,220	Good
Md 5 over Town Run	1990	21,360	Fair
Md 4 over St Marys River	1974	18,051	Fair