US Bridges

S-45-52 over Lake Swamp

Good

Williamsburg County, South Carolina · 6.4 MI NE Cades · Structure no. 000000000008948

Built
1995
30 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

S-45-52 over Lake Swamp is a concrete continuous slab carrying S-45-52 over Lake Swamp in Williamsburg County, South Carolina. It was built in 1995, so it is 30 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,450 vehicles a day, roughly 10% of them trucks, projected to reach 2,306 by 2043. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-45-52
CrossesLake Swamp
Location6.4 MI NE Cades
RouteState Highway 52
CountyWilliamsburg County
StateSouth Carolina
Coordinates33.81398, -79.67859
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating50.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic2,306 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-45-52 over Lake Swamp built?

It was built in 1995, making it 30 years old in 2025.

What condition is S-45-52 over Lake Swamp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does S-45-52 over Lake Swamp carry?

About 1,450 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S-45-52 over Lake Swamp?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns S-45-52 over Lake Swamp?

It is owned by the State Highway Agency.