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I-495 Ramp N-w over Backlick Road RTE.617

Fairfax County, Virginia · rated Fair in the 2025 National Bridge Inventory

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

I-495 Ramp N-w over Backlick Road RTE.617 in Fairfax County, Virginia, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2002, making it 23 years old at the 2025 inventory.
It carries about 107,497 vehicles a day (traffic count year 2018).
Its listed owner is the state highway agency.
It is one of 345 of the 752 inventoried bridges in Fairfax County rated fair (45.9%); 6 (0.8%) 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


Structure	Steel stringer or multi-beam girder
Length	about 105 ft
Location	0.80Fr395 / 1.92To620
NBI structure number	000000000025814
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Ramp Ok-e over I-95; Rmps Ok-s;f-s;h-s	2000	281,966	Good
Shirley Mem. Hiway over Accotink Creek	1993	232,853	Fair
Shirley Highway over Pohick Creek	1994	232,853	Fair
I-495 over NS Railway	1961	227,699	Fair
Capital Beltway over Rte 2652 (heming Ave)	1961	227,699	Fair
Nb-95; Hov & Sb-95 over Lorton Road & Route 642	1995	218,183	Fair