US Bridges

I-66 EB & Ramp over I-495 SB & Sbgp

Good

Fairfax County, Virginia · 02.43FR0243/01.70TO0007 · Structure no. 000000000028663

Built
2010
15 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
220 ft
2 main spans
Daily traffic
75,012
2022 count
Owner
State
State Highway Agency

About this bridge

I-66 EB & Ramp over I-495 SB & Sbgp is a steel continuous stringer/multi-beam or girder carrying I-66 EB & Ramp over I-495 SB & Sbgp in Fairfax County, Virginia. It was built in 2010, so it is 15 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 75,012 vehicles a day, roughly 1% of them trucks, projected to reach 109,518 by 2042. The structure is 220 ft (67.2 m) long and 73 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-66 EB & Ramp
CrossesI-495 SB & Sbgp
Location02.43FR0243/01.70TO0007
RouteInterstate 66
CountyFairfax County
StateVirginia
Coordinates38.88489, -77.22257
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.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.2 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length220 ft (67.2 m)
Longest span113 ft (34.5 m)
Deck width73 ft (22.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75,012 (2022)
Projected traffic109,518 by 2042
Trucks1%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 I-66 EB & Ramp over I-495 SB & Sbgp built?

It was built in 2010, making it 15 years old in 2025.

What condition is I-66 EB & Ramp over I-495 SB & Sbgp 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 August 2024.

How much traffic does I-66 EB & Ramp over I-495 SB & Sbgp carry?

About 75,012 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-66 EB & Ramp over I-495 SB & Sbgp?

The structure is 220 ft (67.2 m) long with a longest span of 113 ft (34.5 m) and a deck 73 ft wide.

Who owns I-66 EB & Ramp over I-495 SB & Sbgp?

It is owned by the State Highway Agency.