US Bridges

I-66 Wbl over Cub Run

Good

Fairfax County, Virginia · 02.00FR234/02.26TO29 · Structure no. 000000000024993

Built
1996
29 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
3 main spans
Daily traffic
63,396
2022 count
Owner
State
State Highway Agency

About this bridge

I-66 Wbl over Cub Run is a steel continuous stringer/multi-beam or girder carrying I-66 Wbl over Cub Run in Fairfax County, Virginia. It was built in 1996, so it is 29 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 63,396 vehicles a day, roughly 1% of them trucks, projected to reach 92,558 by 2045. The structure is 290 ft (88.4 m) long and 90 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-66 Wbl
CrossesCub Run
Location02.00FR234/02.26TO29
RouteInterstate 66
CountyFairfax County
StateVirginia
Coordinates38.81509, -77.47789
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length290 ft (88.4 m)
Longest span120 ft (36.6 m)
Deck width90 ft (27.3 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,396 (2022)
Projected traffic92,558 by 2045
Trucks1%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$175 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-66 Wbl over Cub Run built?

It was built in 1996, making it 29 years old in 2025.

What condition is I-66 Wbl over Cub Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does I-66 Wbl over Cub Run carry?

About 63,396 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-66 Wbl over Cub Run?

The structure is 290 ft (88.4 m) long with a longest span of 120 ft (36.6 m) and a deck 90 ft wide.

Who owns I-66 Wbl over Cub Run?

It is owned by the State Highway Agency.