US Bridges

SR1180 over Nantahala River

Good

Swain County, North Carolina · 50 W.JCT.US19 74 · Structure no. 000000001730074

Built
2002
23 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
164 ft
2 main spans
Daily traffic
10
2023 count
Owner
State
State Highway Agency

About this bridge

SR1180 over Nantahala River is a steel continuous stringer/multi-beam or girder carrying SR1180 over Nantahala River in Swain County, North Carolina. It was built in 2002, so it is 23 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 10 vehicles a day, projected to reach 20 by 2040. The structure is 164 ft (49.9 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSR1180
CrossesNantahala River
Location50 W.JCT.US19 74
RouteState Highway 1180
Coordinates35.33256, -83.59101
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating87 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length164 ft (49.9 m)
Longest span97 ft (29.5 m)
Deck width36 ft (10.9 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic20 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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 SR1180 over Nantahala River built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR1180 over Nantahala River 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 September 2023.

How much traffic does SR1180 over Nantahala River carry?

About 10 vehicles per day (2023 count).

How long is SR1180 over Nantahala River?

The structure is 164 ft (49.9 m) long with a longest span of 97 ft (29.5 m) and a deck 36 ft wide.

Who owns SR1180 over Nantahala River?

It is owned by the State Highway Agency.