US Bridges

US74 Wbl over SR1166

Fair

Swain County, North Carolina · 1 MI.E.JCT.SR1159 · Structure no. 000000001730019

Built
1978
47 years old, rebuilt 2013
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
174 ft
3 main spans
Daily traffic
7,000
2022 count
Owner
State
State Highway Agency

About this bridge

US74 Wbl over SR1166 is a steel stringer/multi-beam or girder carrying US74 Wbl over SR1166 in Swain County, North Carolina. It was built in 1978 and reconstructed in 2013, so it is 47 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 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 7,000 vehicles a day, roughly 14% of them trucks, projected to reach 14,000 by 2040. The structure is 174 ft (53 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS74 Wbl
CrossesSR1166
Location1 MI.E.JCT.SR1159
RouteU.S. Route 74
CountySwain County
StateNorth Carolina
Coordinates35.42506, -83.41981
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length174 ft (53 m)
Longest span84 ft (25.6 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2022)
Projected traffic14,000 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 US74 Wbl over SR1166 built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2013.

What condition is US74 Wbl over SR1166 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 September 2023.

How much traffic does US74 Wbl over SR1166 carry?

About 7,000 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US74 Wbl over SR1166?

The structure is 174 ft (53 m) long with a longest span of 84 ft (25.6 m) and a deck 42 ft wide.

Who owns US74 Wbl over SR1166?

It is owned by the State Highway Agency.