US Bridges

I-81 Nbl over SR-625 (gap of Ridge Rd)

Fair

Wythe County, Virginia · 2.71M to 90 & 4.34M to 11 · Structure no. 000000000019608

Built
1963
62 years old, rebuilt 1986
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
124 ft
3 main spans
Daily traffic
16,245
2022 count
Owner
State
State Highway Agency

About this bridge

I-81 Nbl over SR-625 (gap of Ridge Rd) is a concrete tee beam carrying I-81 Nbl over SR-625 (gap of Ridge Rd) in Wythe County, Virginia. It was built in 1963 and reconstructed in 1986, 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 16,245 vehicles a day, roughly 25% of them trucks, projected to reach 17,266 by 2042. The structure is 124 ft (37.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-81 Nbl
CrossesSR-625 (gap of Ridge Rd)
Location2.71M to 90 & 4.34M to 11
RouteInterstate 81
CountyWythe County
StateVirginia
Coordinates36.92216, -81.22557
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating65 US tons
Inventory rating50 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length124 ft (37.8 m)
Longest span43 ft (13.1 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,245 (2022)
Projected traffic17,266 by 2042
Trucks25%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$152.1 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Nbl over SR-625 (gap of Ridge Rd) built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1986.

What condition is I-81 Nbl over SR-625 (gap of Ridge Rd) 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 April 2024.

How much traffic does I-81 Nbl over SR-625 (gap of Ridge Rd) carry?

About 16,245 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is I-81 Nbl over SR-625 (gap of Ridge Rd)?

The structure is 124 ft (37.8 m) long with a longest span of 43 ft (13.1 m) and a deck 44 ft wide.

Who owns I-81 Nbl over SR-625 (gap of Ridge Rd)?

It is owned by the State Highway Agency.