US Bridges

SR1310 over Nantahala River

Fair

Macon County, North Carolina · .3 MI.S.JCT.US19 74 · Structure no. 000000001130322

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
750
2022 count
Owner
State
State Highway Agency

About this bridge

SR1310 over Nantahala River is a prestressed concrete slab carrying SR1310 over Nantahala River in Macon County, North Carolina. It was built in 1990, so it is 35 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 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 750 vehicles a day, roughly 7% of them trucks, projected to reach 1,500 by 2040. The structure is 115 ft (35 m) long and 27 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

Open in Google Maps
CarriesSR1310
CrossesNantahala River
Location.3 MI.S.JCT.US19 74
RouteState Highway 1310
CountyMacon County
StateNorth Carolina
Coordinates35.27281, -83.67764
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.9 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length115 ft (35 m)
Longest span46 ft (14 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2022)
Projected traffic1,500 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1310 over Nantahala River built?

It was built in 1990, making it 35 years old in 2025.

What condition is SR1310 over Nantahala River 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 October 2024.

How much traffic does SR1310 over Nantahala River carry?

About 750 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1310 over Nantahala River?

The structure is 115 ft (35 m) long with a longest span of 46 ft (14 m) and a deck 27 ft wide.

Who owns SR1310 over Nantahala River?

It is owned by the State Highway Agency.