US Bridges

I-81 Nbl & Sbl over NS Railway & Beaver Ck

Fair

Washington County, Virginia · .59 FR 11; 1.32 to 658 · Structure no. 000000000020031

Built
1963
62 years old, rebuilt 2002
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
404 ft
4 main spans
Daily traffic
54,321
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Nbl & Sbl over NS Railway & Beaver Ck is a steel stringer/multi-beam or girder carrying I-81 Nbl & Sbl over NS Railway & Beaver Ck in Washington County, Virginia. It was built in 1963 and reconstructed in 2002, 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 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 54,321 vehicles a day, roughly 1% of them trucks, projected to reach 60,568 by 2045. The structure is 404 ft (123.2 m) long and 123 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI-81 Nbl & Sbl
CrossesNS Railway & Beaver Ck
Location.59 FR 11; 1.32 to 658
RouteInterstate 81
Coordinates36.62523, -82.1445
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating39 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length404 ft (123.2 m)
Longest span109 ft (33.1 m)
Deck width123 ft (37.5 m)
Roadway width117 ft (35.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54,321 (2022)
Projected traffic60,568 by 2045
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.9 mi (3 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 with deck rehabilitation or replacement
Estimated improvement cost$899.1 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Nbl & Sbl over NS Railway & Beaver Ck built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2002.

What condition is I-81 Nbl & Sbl over NS Railway & Beaver Ck 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 March 2023.

How much traffic does I-81 Nbl & Sbl over NS Railway & Beaver Ck carry?

About 54,321 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-81 Nbl & Sbl over NS Railway & Beaver Ck?

The structure is 404 ft (123.2 m) long with a longest span of 109 ft (33.1 m) and a deck 123 ft wide.

Who owns I-81 Nbl & Sbl over NS Railway & Beaver Ck?

It is owned by the State Highway Agency.