US Bridges

S-25-12 over Coosawhatchie River

Fair

Hampton County, South Carolina · 3MI SW Brunson · Structure no. 000000000005958

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
195 ft
13 main spans
Daily traffic
200
2023 count
Owner
State
State Highway Agency

About this bridge

S-25-12 over Coosawhatchie River is a concrete slab carrying S-25-12 over Coosawhatchie River in Hampton County, South Carolina. It was built in 1971, so it is 54 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 5 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 200 vehicles a day, roughly 8% of them trucks, projected to reach 292 by 2043. The structure is 195 ft (59.4 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-25-12
CrossesCoosawhatchie River
Location3MI SW Brunson
RouteState Highway 12
Coordinates32.90448, -81.2274
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans13
Design loadH 15
Structure length195 ft (59.4 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 traffic200 (2023)
Projected traffic292 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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-25-12 over Coosawhatchie River built?

It was built in 1971, making it 54 years old in 2025.

What condition is S-25-12 over Coosawhatchie River 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 March 2023.

How much traffic does S-25-12 over Coosawhatchie River carry?

About 200 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-25-12 over Coosawhatchie River?

The structure is 195 ft (59.4 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-25-12 over Coosawhatchie River?

It is owned by the State Highway Agency.