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Troyer Road over Trib / Little Deer Creek

Harford County, Maryland · rated Good in the 2025 National Bridge Inventory

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

Troyer Road over Trib / Little Deer Creek in Harford County, Maryland, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 2023, making it 2 years old at the 2025 inventory.
It carries about 335 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 107 of the 276 inventoried bridges in Harford County rated good (38.8%); 12 (4.3%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete multiple box beam
Length	about 37 ft
Location	1.5 Miles NE of Md 23
NBI structure number	200000H-0103010
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-95 over Winters Run Rd Winters R	1963	161,591	Fair
I-95 over James Run	1963	130,492	Fair
I-95 over Grays Run	1963	116,162	Good
I-95 over Carsins Run	1963	100,386	Good
I-95 over Swan Creek	1963	100,386	Fair
I-95 over Md 462	1963	95,675	Fair