US Bridges

Nbl Shirley Hwy. over Norfolk Southern R.R.

Good

Fairfax County, Virginia · 00.90FR644/00.80TO648 · Structure no. 000000000027454

Built
2007
18 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
86,915
2022 count
Owner
State
State Highway Agency

About this bridge

Nbl Shirley Hwy. over Norfolk Southern R.R. is a prestressed concrete stringer/multi-beam or girder carrying Nbl Shirley Hwy. over Norfolk Southern R.R. in Fairfax County, Virginia. It was built in 2007, so it is 18 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 86,915 vehicles a day, roughly 1% of them trucks, projected to reach 96,910 by 2045. The structure is 120 ft (36.6 m) long and 69 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesNbl Shirley Hwy.
CrossesNorfolk Southern R.R.
Location00.90FR644/00.80TO648
RouteInterstate 395
CountyFairfax County
StateVirginia
Coordinates38.79247, -77.17358
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.7 US tons
Inventory rating65.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span117 ft (35.7 m)
Deck width69 ft (21 m)
Roadway width66 ft (20 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86,915 (2022)
Projected traffic96,910 by 2045
Trucks1%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 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 Nbl Shirley Hwy. over Norfolk Southern R.R. built?

It was built in 2007, making it 18 years old in 2025.

What condition is Nbl Shirley Hwy. over Norfolk Southern R.R. 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 April 2023.

How much traffic does Nbl Shirley Hwy. over Norfolk Southern R.R. carry?

About 86,915 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Nbl Shirley Hwy. over Norfolk Southern R.R.?

The structure is 120 ft (36.6 m) long with a longest span of 117 ft (35.7 m) and a deck 69 ft wide.

Who owns Nbl Shirley Hwy. over Norfolk Southern R.R.?

It is owned by the State Highway Agency.