US Bridges

US 76 over Green Swamp

Fair

Sumter County, South Carolina · 4 MI NW of Sumter · Structure no. 000000000001229

Built
1941
84 years old, rebuilt 1957
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
30,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 76 over Green Swamp is a concrete culvert carrying US 76 over Green Swamp in Sumter County, South Carolina. It was built in 1941 and reconstructed in 1957, 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 30,400 vehicles a day, roughly 6% of them trucks, projected to reach 20,976 by 2043. The structure is 43 ft (13.1 m) long and 102 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesUS 76
CrossesGreen Swamp
Location4 MI NW of Sumter
RouteU.S. Route 76
CountySumter County
StateSouth Carolina
Coordinates33.95722, -80.39306
Functional classUrban Other Principal Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width102 ft (31.1 m)
Roadway width87 ft (26.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,400 (2023)
Projected traffic20,976 by 2043
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$110,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 76 over Green Swamp built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1957.

What condition is US 76 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 June 2024.

How much traffic does US 76 over Green Swamp carry?

About 30,400 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 76 over Green Swamp?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 102 ft wide.

Who owns US 76 over Green Swamp?

It is owned by the State Highway Agency.