US Bridges

NC143 over Sweetwater Creek

Good

Graham County, North Carolina · .01 MI.E.JCT.SR1218 · Structure no. 000000000750133

Built
1976
49 years old
Condition
Good
inspected July 2021
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
5,000
2013 count
Owner
State
State Highway Agency

About this bridge

NC143 over Sweetwater Creek is a concrete continuous culvert carrying NC143 over Sweetwater Creek in Graham County, North Carolina. It was built in 1976, so it is 49 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 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 5,000 vehicles a day, roughly 8% of them trucks, projected to reach 10,000 by 2040. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesNC143
CrossesSweetwater Creek
Location.01 MI.E.JCT.SR1218
RouteState Highway 143
Coordinates35.32864, -83.77161
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating51.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length44 ft (13.4 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2013)
Projected traffic10,000 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC143 over Sweetwater Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is NC143 over Sweetwater Creek 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 July 2021.

How much traffic does NC143 over Sweetwater Creek carry?

About 5,000 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is NC143 over Sweetwater Creek?

The structure is 44 ft (13.4 m) long with a longest span of 11 ft (3.3 m).

Who owns NC143 over Sweetwater Creek?

It is owned by the State Highway Agency.