US Bridges

S-38-99 over Bull Swamp

Fair

Orangeburg County, South Carolina · 2MI E Woodford · Structure no. 000000000006358

Built
1973
52 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
105 ft
7 main spans
Daily traffic
175
2023 count
Owner
State
State Highway Agency

About this bridge

S-38-99 over Bull Swamp is a concrete slab carrying S-38-99 over Bull Swamp in Orangeburg County, South Carolina. It was built in 1973, so it is 52 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 175 vehicles a day, roughly 5% of them trucks, projected to reach 224 by 2043. The structure is 105 ft (32 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesS-38-99
CrossesBull Swamp
Location2MI E Woodford
RouteState Highway 99
Coordinates33.68151, -81.08329
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 15
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2023)
Projected traffic224 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 S-38-99 over Bull Swamp built?

It was built in 1973, making it 52 years old in 2025.

What condition is S-38-99 over Bull 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 December 2024.

How much traffic does S-38-99 over Bull Swamp carry?

About 175 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-38-99 over Bull Swamp?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-38-99 over Bull Swamp?

It is owned by the State Highway Agency.