US Bridges

I-495 Ramp N-W over Backlick Road RTE.617

Fair

Fairfax County, Virginia · 0.80FR395 / 1.92TO620 · Structure no. 000000000025814

Built
2002
23 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
1 main span
Daily traffic
107,497
2018 count
Owner
State
State Highway Agency

About this bridge

I-495 Ramp N-W over Backlick Road RTE.617 is a steel stringer/multi-beam or girder carrying I-495 Ramp N-W over Backlick Road RTE.617 in Fairfax County, Virginia. It was built in 2002, so it is 23 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 107,497 vehicles a day, roughly 6% of them trucks, projected to reach 98,700 by 2042. The structure is 106 ft (32.3 m) long and 74 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI-495 Ramp N-W
CrossesBacklick Road RTE.617
Location0.80FR395 / 1.92TO620
RouteInterstate 495
CountyFairfax County
StateVirginia
Coordinates38.79531, -77.18589
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating66.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span104 ft (31.7 m)
Deck width74 ft (22.6 m)
Roadway width71 ft (21.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107,497 (2018)
Projected traffic98,700 by 2042
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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$150 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-495 Ramp N-W over Backlick Road RTE.617 built?

It was built in 2002, making it 23 years old in 2025.

What condition is I-495 Ramp N-W over Backlick Road RTE.617 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 December 2024.

How much traffic does I-495 Ramp N-W over Backlick Road RTE.617 carry?

About 107,497 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is I-495 Ramp N-W over Backlick Road RTE.617?

The structure is 106 ft (32.3 m) long with a longest span of 104 ft (31.7 m) and a deck 74 ft wide.

Who owns I-495 Ramp N-W over Backlick Road RTE.617?

It is owned by the State Highway Agency.