US Bridges

S-25-43 over Whippy Swamp

Fair

Hampton County, South Carolina · 6.5MI N Hampton · Structure no. 000000000008861

Built
1995
30 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
270 ft
9 main spans
Daily traffic
275
2023 count
Owner
State
State Highway Agency

About this bridge

S-25-43 over Whippy Swamp is a prestressed concrete slab carrying S-25-43 over Whippy Swamp in Hampton 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 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 275 vehicles a day, roughly 10% of them trucks, projected to reach 382 by 2043. The structure is 270 ft (82.3 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS-25-43
CrossesWhippy Swamp
Location6.5MI N Hampton
RouteState Highway 43
CountyHampton County
StateSouth Carolina
Coordinates32.96004, -81.10336
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
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.9 US tons
Inventory rating58.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans9
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span30 ft (9.1 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2023)
Projected traffic382 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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-25-43 over Whippy Swamp built?

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

What condition is S-25-43 over Whippy 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 March 2023.

How much traffic does S-25-43 over Whippy Swamp carry?

About 275 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S-25-43 over Whippy Swamp?

The structure is 270 ft (82.3 m) long with a longest span of 30 ft (9.1 m) and a deck 38 ft wide.

Who owns S-25-43 over Whippy Swamp?

It is owned by the State Highway Agency.