US Bridges

I-495EB Outer Loop over Ramp W-N

Fair

Fairfax County, Virginia · 02.62FR620/01.75TO613 · Structure no. 000000000025818

Built
2001
24 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
105,239
2022 count
Owner
State
State Highway Agency

About this bridge

I-495EB Outer Loop over Ramp W-N is a prestressed concrete stringer/multi-beam or girder carrying I-495EB Outer Loop over Ramp W-N in Fairfax County, Virginia. It was built in 2001, so it is 24 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 105,239 vehicles a day, roughly 1% of them trucks, projected to reach 134,747 by 2045. The structure is 110 ft (33.5 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-495EB Outer Loop
CrossesRamp W-N
Location02.62FR620/01.75TO613
RouteInterstate 495
CountyFairfax County
StateVirginia
Coordinates38.79019, -77.17369
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.9 US tons
Inventory rating88.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span108 ft (32.9 m)
Deck width73 ft (22.1 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105,239 (2022)
Projected traffic134,747 by 2045
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-495EB Outer Loop over Ramp W-N built?

It was built in 2001, making it 24 years old in 2025.

What condition is I-495EB Outer Loop over Ramp W-N 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 I-495EB Outer Loop over Ramp W-N carry?

About 105,239 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-495EB Outer Loop over Ramp W-N?

The structure is 110 ft (33.5 m) long with a longest span of 108 ft (32.9 m) and a deck 73 ft wide.

Who owns I-495EB Outer Loop over Ramp W-N?

It is owned by the State Highway Agency.