US Bridges

Interstate 77 Nbl over Route 52 & New River

Fair

Wythe County, Virginia · 6.48MTO81&1.18MTOCARROLCO · Structure no. 000000000019586

Built
1978
47 years old, rebuilt 2006
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,798 ft
8 main spans
Daily traffic
21,266
2022 count
Owner
State
State Highway Agency

About this bridge

Interstate 77 Nbl over Route 52 & New River is a steel continuous stringer/multi-beam or girder carrying Interstate 77 Nbl over Route 52 & New River in Wythe County, Virginia. It was built in 1978 and reconstructed in 2006, so it is 47 years old, younger 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 21,266 vehicles a day, roughly 1% of them trucks, projected to reach 23,712 by 2042. The structure is 1,798 ft (548.1 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesInterstate 77 Nbl
CrossesRoute 52 & New River
Location6.48MTO81&1.18MTOCARROLCO
RouteInterstate 77
Coordinates36.87019, -80.87216
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
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 rating67 US tons
Inventory rating52 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length1,798 ft (548.1 m)
Longest span240 ft (73.2 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,266 (2022)
Projected traffic23,712 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$130 million (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 77 Nbl over Route 52 & New River built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2006.

What condition is Interstate 77 Nbl over Route 52 & New River 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 2024.

How much traffic does Interstate 77 Nbl over Route 52 & New River carry?

About 21,266 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Interstate 77 Nbl over Route 52 & New River?

The structure is 1,798 ft (548.1 m) long with a longest span of 240 ft (73.2 m) and a deck 63 ft wide.

Who owns Interstate 77 Nbl over Route 52 & New River?

It is owned by the State Highway Agency.