US Bridges

West Ox Road over Route I-66

Fair

Fairfax County, Virginia · 00.80 FR 29/00.90 to 50 · Structure no. 000000000006667

Built
1993
32 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
437 ft
4 main spans
Daily traffic
22,581
2022 count
Owner
State
State Highway Agency

About this bridge

West Ox Road over Route I-66 is a steel stringer/multi-beam or girder carrying West Ox Road over Route I-66 in Fairfax County, Virginia. It was built in 1993, so it is 32 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 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 22,581 vehicles a day, roughly 1% of them trucks, projected to reach 25,178 by 2045. The structure is 437 ft (133.2 m) long and 115 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest Ox Road
CrossesRoute I-66
Location00.80 FR 29/00.90 to 50
RouteCounty Highway 608
CountyFairfax County
StateVirginia
Coordinates38.85706, -77.37146
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.8 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length437 ft (133.2 m)
Longest span180 ft (54.9 m)
Deck width115 ft (35 m)
Roadway width93 ft (28.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,581 (2022)
Projected traffic25,178 by 2045
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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$250 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Ox Road over Route I-66 built?

It was built in 1993, making it 32 years old in 2025.

What condition is West Ox Road over Route I-66 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 June 2023.

How much traffic does West Ox Road over Route I-66 carry?

About 22,581 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is West Ox Road over Route I-66?

The structure is 437 ft (133.2 m) long with a longest span of 180 ft (54.9 m) and a deck 115 ft wide.

Who owns West Ox Road over Route I-66?

It is owned by the State Highway Agency.