US Bridges

SR1310 over Back Swamp

Good

Nash County, North Carolina · 275 S. of JCT SR1325 · Structure no. 000000001270125

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
90 ft
2 main spans
Daily traffic
350
2021 count
Owner
State
State Highway Agency

About this bridge

SR1310 over Back Swamp is a prestressed concrete slab carrying SR1310 over Back Swamp in Nash County, North Carolina. It was built in 2015, so it is 10 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 350 vehicles a day, roughly 4% of them trucks, projected to reach 700 by 2040. The structure is 90 ft (27.4 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1310
CrossesBack Swamp
Location275 S. of JCT SR1325
RouteState Highway 1310
Coordinates36.04237, -78.05874
Functional classRural Minor Collector

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.9 US tons
Inventory rating49.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span58 ft (17.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2021)
Projected traffic700 by 2040
Trucks4%
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 SR1310 over Back Swamp built?

It was built in 2015, making it 10 years old in 2025.

What condition is SR1310 over Back Swamp 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 June 2023.

How much traffic does SR1310 over Back Swamp carry?

About 350 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is SR1310 over Back Swamp?

The structure is 90 ft (27.4 m) long with a longest span of 58 ft (17.6 m) and a deck 33 ft wide.

Who owns SR1310 over Back Swamp?

It is owned by the State Highway Agency.