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Potomac Avenue over Four Mile Run

Alexandria city, Virginia · rated Good in the 2025 National Bridge Inventory

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

Potomac Avenue over Four Mile Run in Alexandria city, Virginia, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1975 and reconstructed in 2011, making it 50 years old at the 2025 inventory.
It carries about 4,500 vehicles a day (traffic count year 2018).
Its listed owner is a city or municipal highway agency.
It is one of 11 of the 28 inventoried bridges in Alexandria city rated good (39.3%); 0 (0.0%) 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

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


Structure	Prestressed concrete multiple box beam
Length	about 274 ft
Location	N. Fayette St.
NBI structure number	000000000029943
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Telegraph Road over Rt 236-duke St	1969	66,000	Fair
Telegraph Road over Mill Road 6 Tracks	1969	58,274	Good
Duke Street over Route I-395	1969	49,024	Fair
Route 1 over Rt 1 Ramp; CSX; Main Blv	2007	44,286	Good
King Street over Route I-395; Ramps C&g	1970	42,338	Fair
Van Dorn Street over Backlick Creek	1932	39,079	Fair