US Bridges

SR1311 over Gumberry Swamp

Fair

Northampton County, North Carolina · 0.5 MI.E.JCT.SR1313 · Structure no. 000000001310051

Built
1978
47 years old
Condition
Fair
inspected January 2025
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
1,200
2018 count
Owner
State
State Highway Agency

About this bridge

SR1311 over Gumberry Swamp is a prestressed concrete slab carrying SR1311 over Gumberry Swamp in Northampton County, North Carolina. It was built in 1978, so it is 47 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 6 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 1,200 vehicles a day, roughly 6% of them trucks, projected to reach 2,400 by 2040. The structure is 45 ft (13.7 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR1311
CrossesGumberry Swamp
Location0.5 MI.E.JCT.SR1313
RouteState Highway 1311
CountyNorthampton County
StateNorth Carolina
Coordinates36.43509, -77.46541
Functional classRural Minor 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.9 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width36 ft (10.9 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2018)
Projected traffic2,400 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 SR1311 over Gumberry Swamp built?

It was built in 1978, making it 47 years old in 2025.

What condition is SR1311 over Gumberry Swamp 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 January 2025.

How much traffic does SR1311 over Gumberry Swamp carry?

About 1,200 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is SR1311 over Gumberry Swamp?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 36 ft wide.

Who owns SR1311 over Gumberry Swamp?

It is owned by the State Highway Agency.