US Bridges

SR1318 over Middle Swamp

Fair

Gates County, North Carolina · 0.7 Mi. W. Jct. SR1313 · Structure no. 000000000730023

Built
1984
41 years old
Condition
Fair
inspected January 2024
Type
Slab
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
300
2021 count
Owner
State
State Highway Agency

About this bridge

SR1318 over Middle Swamp is a prestressed concrete slab carrying SR1318 over Middle Swamp in Gates County, North Carolina. It was built in 1984, so it is 41 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 300 vehicles a day, roughly 6% of them trucks, projected to reach 600 by 2040. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1318
CrossesMiddle Swamp
Location0.7 Mi. W. Jct. SR1313
RouteState Highway 1318
Coordinates36.4898, -76.65768
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length42 ft (12.8 m)
Longest span39 ft (11.8 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic600 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 SR1318 over Middle Swamp built?

It was built in 1984, making it 41 years old in 2025.

What condition is SR1318 over Middle 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 2024.

How much traffic does SR1318 over Middle Swamp carry?

About 300 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1318 over Middle Swamp?

The structure is 42 ft (12.8 m) long with a longest span of 39 ft (11.8 m) and a deck 28 ft wide.

Who owns SR1318 over Middle Swamp?

It is owned by the State Highway Agency.