US Bridges

S-45-33 over Kingstree Swamp

FairPosted for load

Williamsburg County, South Carolina · 11.0 MI N Kingstree · Structure no. 000000000007630

Built
1982
43 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
1,400
2023 count
Owner
State
State Highway Agency

About this bridge

S-45-33 over Kingstree Swamp is a concrete slab carrying S-45-33 over Kingstree Swamp in Williamsburg County, South Carolina. It was built in 1982, so it is 43 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,400 vehicles a day, roughly 4% of them trucks, projected to reach 2,044 by 2043. The structure is 45 ft (13.7 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-45-33
CrossesKingstree Swamp
Location11.0 MI N Kingstree
RouteState Highway 33
Coordinates33.85056, -79.84
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating48.9 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length45 ft (13.7 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 traffic1,400 (2023)
Projected traffic2,044 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$312,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-45-33 over Kingstree Swamp built?

It was built in 1982, making it 43 years old in 2025.

What condition is S-45-33 over Kingstree 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 April 2024.

How much traffic does S-45-33 over Kingstree Swamp carry?

About 1,400 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-45-33 over Kingstree Swamp?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-45-33 over Kingstree Swamp?

It is owned by the State Highway Agency.