US Bridges

I-77 Nbl over I-74 Ebl

Fair

Surry County, North Carolina · .9 MI.N.JCT.NC89 · Structure no. 000000001710208

Built
1975
50 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
307 ft
3 main spans
Daily traffic
10,750
2020 count
Owner
State
State Highway Agency

About this bridge

I-77 Nbl over I-74 Ebl is a steel stringer/multi-beam or girder carrying I-77 Nbl over I-74 Ebl in Surry County, North Carolina. It was built in 1975, so it is 50 years old, older than the North Carolina average of 38.7 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 10,750 vehicles a day, roughly 23% of them trucks, projected to reach 21,500 by 2040. The structure is 307 ft (93.5 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI-77 Nbl
CrossesI-74 Ebl
Location.9 MI.N.JCT.NC89
RouteInterstate 77
CountySurry County
StateNorth Carolina
Coordinates36.49401, -80.74146
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length307 ft (93.5 m)
Longest span114 ft (34.7 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,750 (2020)
Projected traffic21,500 by 2040
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-77 Nbl over I-74 Ebl built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-77 Nbl over I-74 Ebl 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 I-77 Nbl over I-74 Ebl carry?

About 10,750 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is I-77 Nbl over I-74 Ebl?

The structure is 307 ft (93.5 m) long with a longest span of 114 ft (34.7 m) and a deck 42 ft wide.

Who owns I-77 Nbl over I-74 Ebl?

It is owned by the State Highway Agency.