US Bridges

Nbl Route 81 over RTE 799

Fair

Pulaski County, Virginia · 5.65-RTE100;0.57-MONTG.CO · Structure no. 000000000014494

Built
1965
60 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
138 ft
3 main spans
Daily traffic
20,204
2022 count
Owner
State
State Highway Agency

About this bridge

Nbl Route 81 over RTE 799 is a concrete tee beam carrying Nbl Route 81 over RTE 799 in Pulaski County, Virginia. It was built in 1965, so it is 60 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 20,204 vehicles a day, roughly 1% of them trucks, projected to reach 24,312 by 2042. The structure is 138 ft (42.1 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNbl Route 81
CrossesRTE 799
Location5.65-RTE100;0.57-MONTG.CO
RouteInterstate 81
CountyPulaski County
StateVirginia
Coordinates37.08596, -80.59304
Functional classRural 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
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 alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length138 ft (42.1 m)
Longest span48 ft (14.7 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,204 (2022)
Projected traffic24,312 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 proposedNone recorded
Estimated improvement cost$117.9 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nbl Route 81 over RTE 799 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nbl Route 81 over RTE 799 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 2023.

How much traffic does Nbl Route 81 over RTE 799 carry?

About 20,204 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Nbl Route 81 over RTE 799?

The structure is 138 ft (42.1 m) long with a longest span of 48 ft (14.7 m) and a deck 44 ft wide.

Who owns Nbl Route 81 over RTE 799?

It is owned by the State Highway Agency.