US Bridges

I-66 over Littler River & Gwp Pkwy

Fair

Arlington County, Virginia · T.R. Br over Little River · Structure no. 000000000031131

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,069 ft
8 main spans
Daily traffic
89,647
2022 count
Owner
Local
Other Local Agency

About this bridge

I-66 over Littler River & Gwp Pkwy is a steel continuous stringer/multi-beam or girder carrying I-66 over Littler River & Gwp Pkwy in Arlington County, Virginia. It was built in 1964, so it is 61 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 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 89,647 vehicles a day, roughly 1% of them trucks, projected to reach 99,956 by 2042. The structure is 1,069 ft (325.7 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesI-66
CrossesLittler River & Gwp Pkwy
LocationT.R. Br over Little River
RouteInterstate 66
Coordinates38.89217, -77.06589
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length1,069 ft (325.7 m)
Longest span141 ft (43 m)
Deck width91 ft (27.7 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic89,647 (2022)
Projected traffic99,956 by 2042
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$12.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-66 over Littler River & Gwp Pkwy built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-66 over Littler River & Gwp Pkwy 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 I-66 over Littler River & Gwp Pkwy carry?

About 89,647 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-66 over Littler River & Gwp Pkwy?

The structure is 1,069 ft (325.7 m) long with a longest span of 141 ft (43 m) and a deck 91 ft wide.

Who owns I-66 over Littler River & Gwp Pkwy?

It is owned by the Other Local Agency.