US Bridges

Interstate 81(NBL) over RTE F010 from RTE 11

Fair

Smyth County, Virginia · Exit 47 (mile 47.75) · Structure no. 000000000017450

Built
1963
62 years old, rebuilt 1993
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
126 ft
3 main spans
Daily traffic
14,838
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 81(NBL) over RTE F010 from RTE 11 is a steel stringer/multi-beam or girder carrying Interstate 81(NBL) over RTE F010 from RTE 11 in Smyth County, Virginia. It was built in 1963 and reconstructed in 1993, so it is 62 years old, older 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 5 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 14,838 vehicles a day, roughly 1% of them trucks, projected to reach 16,544 by 2042. The structure is 126 ft (38.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesInterstate 81(NBL)
CrossesRTE F010 from RTE 11
LocationExit 47 (mile 47.75)
RouteInterstate 81
CountySmyth County
StateVirginia
Coordinates36.84996, -81.48409
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span51 ft (15.5 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,838 (2022)
Projected traffic16,544 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$588.9 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 81(NBL) over RTE F010 from RTE 11 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1993.

What condition is Interstate 81(NBL) over RTE F010 from RTE 11 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 January 2024.

How much traffic does Interstate 81(NBL) over RTE F010 from RTE 11 carry?

About 14,838 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Interstate 81(NBL) over RTE F010 from RTE 11?

The structure is 126 ft (38.4 m) long with a longest span of 51 ft (15.5 m) and a deck 45 ft wide.

Who owns Interstate 81(NBL) over RTE F010 from RTE 11?

It is owned by the State Highway Agency.