US Bridges

SR1310 over Nantahala River

Fair

Macon County, North Carolina · .5 MI.S.JCT.US19 74 · Structure no. 000000001130226

Built
1950
75 years old, rebuilt 2017
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
3 main spans
Daily traffic
800
2021 count
Owner
State
State Highway Agency

About this bridge

SR1310 over Nantahala River is a steel stringer/multi-beam or girder carrying SR1310 over Nantahala River in Macon County, North Carolina. It was built in 1950 and reconstructed in 2017, so it is 75 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 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 800 vehicles a day, roughly 7% of them trucks, projected to reach 1,600 by 2040. The structure is 106 ft (32.3 m) long and 20 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

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CarriesSR1310
CrossesNantahala River
Location.5 MI.S.JCT.US19 74
RouteState Highway 1310
CountyMacon County
StateNorth Carolina
Coordinates35.27116, -83.67531
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length106 ft (32.3 m)
Longest span35 ft (10.6 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2021)
Projected traffic1,600 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 1950, making it 75 years old in 2025. It was reconstructed in 2017.

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 July 2023.

How much traffic does SR1310 over Nantahala River carry?

About 800 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1310 over Nantahala River?

The structure is 106 ft (32.3 m) long with a longest span of 35 ft (10.6 m) and a deck 20 ft wide.

Who owns SR1310 over Nantahala River?

It is owned by the State Highway Agency.