US Bridges

L-43-4301 over Green Swamp

Fair

Sumter County, South Carolina · 2 MI W of Sumter · Structure no. 000000000008798

Built
1994
31 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
225
2023 count
Owner
County
County Highway Agency

About this bridge

L-43-4301 over Green Swamp is a concrete culvert carrying L-43-4301 over Green Swamp in Sumter County, South Carolina. It was built in 1994, so it is 31 years old, younger 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 225 vehicles a day, roughly 5% of them trucks, projected to reach 288 by 2043. The structure is 25 ft (7.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesL-43-4301
CrossesGreen Swamp
Location2 MI W of Sumter
RouteCounty Highway 4301
Coordinates33.9168, -80.38095
Functional classUrban 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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width42 ft (12.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic288 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 L-43-4301 over Green Swamp built?

It was built in 1994, making it 31 years old in 2025.

What condition is L-43-4301 over Green 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 July 2023.

How much traffic does L-43-4301 over Green Swamp carry?

About 225 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is L-43-4301 over Green Swamp?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 42 ft wide.

Who owns L-43-4301 over Green Swamp?

It is owned by the County Highway Agency.