US Bridges

Sc 453 over Four Hole Swamp

Poor

Orangeburg County, South Carolina · 4MI S of Holly Hill · Structure no. 000000000006758

Built
1975
50 years old
Condition
Poor
inspected December 2023
Type
Slab
Concrete
Length
240 ft
8 main spans
Daily traffic
2,600
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 453 over Four Hole Swamp is a concrete slab carrying Sc 453 over Four Hole Swamp in Orangeburg County, South Carolina. It was built in 1975, so it is 50 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,600 vehicles a day, roughly 5% of them trucks, projected to reach 3,796 by 2043. The structure is 240 ft (73.2 m) long and 48 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSc 453
CrossesFour Hole Swamp
Location4MI S of Holly Hill
RouteState Highway 453
CountyOrangeburg County
StateSouth Carolina
Coordinates33.26951, -80.43742
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span30 ft (9.1 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2023)
Projected traffic3,796 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Sc 453 over Four Hole Swamp built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sc 453 over Four Hole Swamp in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Sc 453 over Four Hole Swamp carry?

About 2,600 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sc 453 over Four Hole Swamp?

The structure is 240 ft (73.2 m) long with a longest span of 30 ft (9.1 m) and a deck 48 ft wide.

Who owns Sc 453 over Four Hole Swamp?

It is owned by the State Highway Agency.