US Bridges

Diaah & EB Dulles over Scott Run

Fair

Fairfax County, Virginia · 13.9 Miles from Dulles Ai · Structure no. 2100023P0000000

Built
1963
62 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
13,000
2024 count
Owner
Federal
Metropolitan Washington Airports Service

About this bridge

Diaah & EB Dulles over Scott Run is a concrete culvert carrying Diaah & EB Dulles over Scott Run in Fairfax County, Virginia. It was built in 1963, so it is 62 years old, older 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 6 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 13,000 vehicles a day, roughly 1% of them trucks, projected to reach 14,300 by 2044. The structure is 20 ft (6.1 m) long.

CarriesDiaah & EB Dulles
CrossesScott Run
Location13.9 Miles from Dulles Ai
Coordinates38.93064, -77.20856
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2024)
Projected traffic14,300 by 2044
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerMetropolitan Washington Airports Service
Maintained byMetropolitan Washington Airports Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$24,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Diaah & EB Dulles over Scott Run built?

It was built in 1963, making it 62 years old in 2025.

What condition is Diaah & EB Dulles over Scott 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 Diaah & EB Dulles over Scott Run carry?

About 13,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Diaah & EB Dulles over Scott Run?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns Diaah & EB Dulles over Scott Run?

It is owned by the Metropolitan Washington Airports Service.