US Bridges

SR1589 over Back Swamp

Fair

Robeson County, North Carolina · 0.1MI N JCT US301&US74ALT · Structure no. 000000001550442

Built
1948
77 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
113 ft
3 main spans
Daily traffic
1,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR1589 over Back Swamp is a concrete tee beam carrying SR1589 over Back Swamp in Robeson County, North Carolina. It was built in 1948, so it is 77 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 1,500 vehicles a day, roughly 6% of them trucks, projected to reach 3,000 by 2040. The structure is 113 ft (34.4 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1589
CrossesBack Swamp
Location0.1MI N JCT US301&US74ALT
RouteState Highway 1589
CountyRobeson County
StateNorth Carolina
Coordinates34.60269, -79.10461
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating52.9 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length113 ft (34.4 m)
Longest span35 ft (10.6 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2021)
Projected traffic3,000 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 SR1589 over Back Swamp built?

It was built in 1948, making it 77 years old in 2025.

What condition is SR1589 over Back 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 May 2024.

How much traffic does SR1589 over Back Swamp carry?

About 1,500 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1589 over Back Swamp?

The structure is 113 ft (34.4 m) long with a longest span of 35 ft (10.6 m) and a deck 33 ft wide.

Who owns SR1589 over Back Swamp?

It is owned by the State Highway Agency.