US Bridges

Sc 33 over Halfway Swamp

Fair

Calhoun County, South Carolina · 6MI E of Cameron · Structure no. 000000000001346

Built
1947
78 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
51 ft
4 main spans
Daily traffic
550
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 33 over Halfway Swamp is a concrete culvert carrying Sc 33 over Halfway Swamp in Calhoun County, South Carolina. It was built in 1947, so it is 78 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 550 vehicles a day, roughly 22% of them trucks, projected to reach 803 by 2043. The structure is 51 ft (15.4 m) long and 54 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesSc 33
CrossesHalfway Swamp
Location6MI E of Cameron
RouteState Highway 33
CountyCalhoun County
StateSouth Carolina
Coordinates33.60561, -80.64175
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 inspectionJuly 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length51 ft (15.4 m)
Longest span12 ft (3.7 m)
Deck width54 ft (16.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2023)
Projected traffic803 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 33 over Halfway Swamp built?

It was built in 1947, making it 78 years old in 2025.

What condition is Sc 33 over Halfway 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 2024.

How much traffic does Sc 33 over Halfway Swamp carry?

About 550 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is Sc 33 over Halfway Swamp?

The structure is 51 ft (15.4 m) long with a longest span of 12 ft (3.7 m) and a deck 54 ft wide.

Who owns Sc 33 over Halfway Swamp?

It is owned by the State Highway Agency.