Home › Virginia › Fairfax County › WB Dulles Toll Roa over Difficult Run

WB Dulles Toll Roa over Difficult Run

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

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

WB Dulles Toll Roa over Difficult Run 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 superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1984, making it 41 years old at the 2025 inventory.
It carries about 22,000 vehicles a day (traffic count year 2024).
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 202 ft
Location	9.0 Miles From Dulles Air
NBI structure number	2100045P0000000
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