US Bridges

S-14-351 over Bennetts Swamp

Good

Clarendon County, South Carolina · 10MI SE Manning · Structure no. 000000000005001

Built
2004
21 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
70 ft
3 main spans
Daily traffic
400
2023 count
Owner
State
State Highway Agency

About this bridge

S-14-351 over Bennetts Swamp is a prestressed concrete slab carrying S-14-351 over Bennetts Swamp in Clarendon County, South Carolina. It was built in 2004, so it is 21 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 400 vehicles a day, roughly 9% of them trucks, projected to reach 584 by 2043. The structure is 70 ft (21.3 m) long and 36 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesS-14-351
CrossesBennetts Swamp
Location10MI SE Manning
RouteState Highway 351
Coordinates33.54006, -80.13771
Functional classRural Major Collector

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span30 ft (9.1 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic584 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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-14-351 over Bennetts Swamp built?

It was built in 2004, making it 21 years old in 2025.

What condition is S-14-351 over Bennetts 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 October 2024.

How much traffic does S-14-351 over Bennetts Swamp carry?

About 400 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is S-14-351 over Bennetts Swamp?

The structure is 70 ft (21.3 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns S-14-351 over Bennetts Swamp?

It is owned by the State Highway Agency.