US Bridges

Old Dominion Drive over Difficult Run

Fair

Fairfax County, Virginia · 00.15FR639/00.20TO1199 · Structure no. 000000000006882

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
467 ft
6 main spans
Daily traffic
6,500
2022 count
Owner
State
State Highway Agency

About this bridge

Old Dominion Drive over Difficult Run is a steel stringer/multi-beam or girder carrying Old Dominion Drive over Difficult Run in Fairfax County, Virginia. It was built in 1979, so it is 46 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 6,500 vehicles a day, projected to reach 7,248 by 2042. The structure is 467 ft (142.3 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesOld Dominion Drive
CrossesDifficult Run
Location00.15FR639/00.20TO1199
RouteCounty Highway 738
CountyFairfax County
StateVirginia
Coordinates38.97475, -77.25457
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 23 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length467 ft (142.3 m)
Longest span92 ft (28 m)
Deck width43 ft (13 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2022)
Projected traffic7,248 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$210 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Dominion Drive over Difficult Run built?

It was built in 1979, making it 46 years old in 2025.

What condition is Old Dominion Drive 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 May 2024.

How much traffic does Old Dominion Drive over Difficult Run carry?

About 6,500 vehicles per day (2022 count).

How long is Old Dominion Drive over Difficult Run?

The structure is 467 ft (142.3 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.

Who owns Old Dominion Drive over Difficult Run?

It is owned by the State Highway Agency.