US Bridges

I-74 Wbl over NC89

Good

Surry County, North Carolina · 0.6 Mi. W. Jct. SR1397 · Structure no. 000000001710355

Built
1994
31 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
228 ft
4 main spans
Daily traffic
7,500
2020 count
Owner
State
State Highway Agency

About this bridge

I-74 Wbl over NC89 is a prestressed concrete stringer/multi-beam or girder carrying I-74 Wbl over NC89 in Surry County, North Carolina. It was built in 1994, so it is 31 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,500 vehicles a day, roughly 23% of them trucks, projected to reach 15,000 by 2040. The structure is 228 ft (69.4 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-74 Wbl
CrossesNC89
Location0.6 Mi. W. Jct. SR1397
RouteInterstate 74
Coordinates36.49041, -80.72949
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating48 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length228 ft (69.4 m)
Longest span69 ft (21 m)
Deck width49 ft (14.9 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2020)
Projected traffic15,000 by 2040
Trucks23%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-74 Wbl over NC89 built?

It was built in 1994, making it 31 years old in 2025.

What condition is I-74 Wbl over NC89 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does I-74 Wbl over NC89 carry?

About 7,500 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is I-74 Wbl over NC89?

The structure is 228 ft (69.4 m) long with a longest span of 69 ft (21 m) and a deck 49 ft wide.

Who owns I-74 Wbl over NC89?

It is owned by the State Highway Agency.