US Bridges

SR1528 over Dunn Swamp

Fair

Columbus County, North Carolina · 0.5MI.N. of JCT.US76 · Structure no. 000000000470292

Built
1986
39 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
100
2019 count
Owner
State
State Highway Agency

About this bridge

SR1528 over Dunn Swamp is a steel culvert carrying SR1528 over Dunn Swamp in Columbus County, North Carolina. It was built in 1986, so it is 39 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 100 vehicles a day, roughly 6% of them trucks, projected to reach 200 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR1528
CrossesDunn Swamp
Location0.5MI.N. of JCT.US76
RouteState Highway 1528
CountyColumbus County
StateNorth Carolina
Coordinates34.33856, -78.85155
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic200 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 SR1528 over Dunn Swamp built?

It was built in 1986, making it 39 years old in 2025.

What condition is SR1528 over Dunn 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 SR1528 over Dunn Swamp carry?

About 100 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is SR1528 over Dunn Swamp?

The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m).

Who owns SR1528 over Dunn Swamp?

It is owned by the State Highway Agency.