US Bridges

S-8-791/OLD US 52 over Canterhill Swamp

Fair

Berkeley County, South Carolina · 5.4 MI N Goose Creek · Structure no. 000000000000129

Built
1922
103 years old, rebuilt 1941
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
44 ft
2 main spans
Daily traffic
6,500
2023 count
Owner
State
State Highway Agency

About this bridge

S-8-791/OLD US 52 over Canterhill Swamp is a concrete tee beam carrying S-8-791/OLD US 52 over Canterhill Swamp in Berkeley County, South Carolina. It was built in 1922 and reconstructed in 1941, so it is 103 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 6,500 vehicles a day, roughly 6% of them trucks, projected to reach 8,905 by 2043. The structure is 44 ft (13.4 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-8-791/OLD US 52
CrossesCanterhill Swamp
Location5.4 MI N Goose Creek
RouteState Highway 791
CountyBerkeley County
StateSouth Carolina
Coordinates33.07058, -80.02224
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating41.4 US tons
Inventory rating24.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length44 ft (13.4 m)
Longest span22 ft (6.7 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2023)
Projected traffic8,905 by 2043
Trucks6%
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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-8-791/OLD US 52 over Canterhill Swamp built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1941.

What condition is S-8-791/OLD US 52 over Canterhill 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 October 2024.

How much traffic does S-8-791/OLD US 52 over Canterhill Swamp carry?

About 6,500 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S-8-791/OLD US 52 over Canterhill Swamp?

The structure is 44 ft (13.4 m) long with a longest span of 22 ft (6.7 m) and a deck 42 ft wide.

Who owns S-8-791/OLD US 52 over Canterhill Swamp?

It is owned by the State Highway Agency.