US Bridges

WB Dulles Toll Roa over Difficult Run

Fair

Fairfax County, Virginia · 9.0 Miles from Dulles Air · Structure no. 2100045P0000000

Built
1984
41 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
203 ft
3 main spans
Daily traffic
22,000
2024 count
Owner
Federal
Metropolitan Washington Airports Service

About this bridge

WB Dulles Toll Roa over Difficult Run is a steel stringer/multi-beam or girder carrying WB Dulles Toll Roa over Difficult Run in Fairfax County, Virginia. It was built in 1984, so it is 41 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 22,000 vehicles a day, projected to reach 26,400 by 2044. The structure is 203 ft (61.8 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWB Dulles Toll Roa
CrossesDifficult Run
Location9.0 Miles from Dulles Air
RouteState Highway 267
CountyFairfax County
StateVirginia
Coordinates38.946, -77.29296
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length203 ft (61.8 m)
Longest span79 ft (24 m)
Deck width67 ft (20.5 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2024)
Projected traffic26,400 by 2044
Trucks—
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerMetropolitan Washington Airports Service
Maintained byMetropolitan Washington Airports Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$116,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB Dulles Toll Roa over Difficult Run built?

It was built in 1984, making it 41 years old in 2025.

What condition is WB Dulles Toll Roa over Difficult Run in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does WB Dulles Toll Roa over Difficult Run carry?

About 22,000 vehicles per day (2024 count).

How long is WB Dulles Toll Roa over Difficult Run?

The structure is 203 ft (61.8 m) long with a longest span of 79 ft (24 m) and a deck 67 ft wide.

Who owns WB Dulles Toll Roa over Difficult Run?

It is owned by the Metropolitan Washington Airports Service.