US Bridges

Sc 57 over Sweat Swamp

Fair

Dillon County, South Carolina · 4.5MI NW of Little Rock · Structure no. 000000000001186

Built
1941
84 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 57 over Sweat Swamp is a concrete culvert carrying Sc 57 over Sweat Swamp in Dillon County, South Carolina. It was built in 1941, so it is 84 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 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,460 by 2043. The structure is 32 ft (9.7 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSc 57
CrossesSweat Swamp
Location4.5MI NW of Little Rock
RouteState Highway 57
CountyDillon County
StateSouth Carolina
Coordinates34.53557, -79.43927
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width34 ft (10.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,460 by 2043
Trucks10%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$137,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 57 over Sweat Swamp built?

It was built in 1941, making it 84 years old in 2025.

What condition is Sc 57 over Sweat 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 June 2023.

How much traffic does Sc 57 over Sweat Swamp carry?

About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sc 57 over Sweat Swamp?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns Sc 57 over Sweat Swamp?

It is owned by the State Highway Agency.