US Bridges

SR1001 over White Marsh Swamp

Fair

Columbus County, North Carolina · 0.9 Mi.S. of JCT.SR1915 · Structure no. 000000000470021

Built
1999
26 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
104 ft
3 main spans
Daily traffic
2,100
2022 count
Owner
State
State Highway Agency

About this bridge

SR1001 over White Marsh Swamp is a prestressed concrete slab carrying SR1001 over White Marsh Swamp in Columbus County, North Carolina. It was built in 1999, so it is 26 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 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 2,100 vehicles a day, roughly 7% of them trucks, projected to reach 4,200 by 2040. The structure is 104 ft (31.6 m) long and 33 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesSR1001
CrossesWhite Marsh Swamp
Location0.9 Mi.S. of JCT.SR1915
RouteState Highway 1001
CountyColumbus County
StateNorth Carolina
Coordinates34.25404, -78.60469
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length104 ft (31.6 m)
Longest span40 ft (12.1 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic4,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 SR1001 over White Marsh Swamp built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR1001 over White Marsh 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 September 2024.

How much traffic does SR1001 over White Marsh Swamp carry?

About 2,100 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR1001 over White Marsh Swamp?

The structure is 104 ft (31.6 m) long with a longest span of 40 ft (12.1 m) and a deck 33 ft wide.

Who owns SR1001 over White Marsh Swamp?

It is owned by the State Highway Agency.