US Bridges

S-15-69 over Salkehatchie Swamp

Fair

Colleton County, South Carolina · 19.5 MI NW Waltb · Structure no. 000000000002506

Built
1957
68 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
28 ft
2 main spans
Daily traffic
75
2023 count
Owner
State
State Highway Agency

About this bridge

S-15-69 over Salkehatchie Swamp is a concrete slab carrying S-15-69 over Salkehatchie Swamp in Colleton County, South Carolina. It was built in 1957, so it is 68 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 75 vehicles a day, projected to reach 104 by 2043. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-15-69
CrossesSalkehatchie Swamp
Location19.5 MI NW Waltb
RouteState Highway 69
CountyColleton County
StateSouth Carolina
Coordinates33.0875, -80.93806
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 10
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic104 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 S-15-69 over Salkehatchie Swamp built?

It was built in 1957, making it 68 years old in 2025.

What condition is S-15-69 over Salkehatchie 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 January 2024.

How much traffic does S-15-69 over Salkehatchie Swamp carry?

About 75 vehicles per day (2023 count).

How long is S-15-69 over Salkehatchie Swamp?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.

Who owns S-15-69 over Salkehatchie Swamp?

It is owned by the State Highway Agency.