US Bridges

Sc 410 over Bug Swamp

Fair

Horry County, South Carolina · 9.0MI E of Loris · Structure no. 000000000000551

Built
1931
94 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
3,000
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 410 over Bug Swamp is a concrete culvert carrying Sc 410 over Bug Swamp in Horry County, South Carolina. It was built in 1931, so it is 94 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 3,000 vehicles a day, roughly 9% of them trucks, projected to reach 4,380 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSc 410
CrossesBug Swamp
Location9.0MI E of Loris
RouteState Highway 410
CountyHorry County
StateSouth Carolina
Coordinates33.98767, -79.02095
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating27.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 10
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2023)
Projected traffic4,380 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$73,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 410 over Bug Swamp built?

It was built in 1931, making it 94 years old in 2025.

What condition is Sc 410 over Bug 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 August 2024.

How much traffic does Sc 410 over Bug Swamp carry?

About 3,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Sc 410 over Bug Swamp?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns Sc 410 over Bug Swamp?

It is owned by the State Highway Agency.