US Bridges

66 Ramp Swh over I-495SB & Hot

Good

Fairfax County, Virginia · 00.30FR495NB/00.50TO66W · Structure no. 000000000028675

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete
Length
279 ft
2 main spans
Daily traffic
75,288
2022 count
Owner
State
State Highway Agency

About this bridge

66 Ramp Swh over I-495SB & Hot is a concrete slab carrying 66 Ramp Swh over I-495SB & Hot in Fairfax County, Virginia. It was built in 2012, so it is 13 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 75,288 vehicles a day, roughly 1% of them trucks, projected to reach 83,946 by 2042. The structure is 279 ft (85 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries66 Ramp Swh
CrossesI-495SB & Hot
Location00.30FR495NB/00.50TO66W
RouteInterstate 495
CountyFairfax County
StateVirginia
Coordinates38.88269, -77.22231
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length279 ft (85 m)
Longest span145 ft (44.2 m)
Deck width33 ft (10.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75,288 (2022)
Projected traffic83,946 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byPrivate (other than railroad)
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 66 Ramp Swh over I-495SB & Hot built?

It was built in 2012, making it 13 years old in 2025.

What condition is 66 Ramp Swh over I-495SB & Hot 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 66 Ramp Swh over I-495SB & Hot carry?

About 75,288 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is 66 Ramp Swh over I-495SB & Hot?

The structure is 279 ft (85 m) long with a longest span of 145 ft (44.2 m) and a deck 33 ft wide.

Who owns 66 Ramp Swh over I-495SB & Hot?

It is owned by the State Highway Agency and maintained by the Private (other than railroad).