US Bridges

S-43-29 over Sammy Swamp

Good

Sumter County, South Carolina · 3 MI NE of Pinewood · Structure no. 000000000009371

Built
1998
27 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
900
2023 count
Owner
State
State Highway Agency

About this bridge

S-43-29 over Sammy Swamp is a concrete continuous slab carrying S-43-29 over Sammy Swamp in Sumter County, South Carolina. It was built in 1998, so it is 27 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 900 vehicles a day, roughly 13% of them trucks, projected to reach 1,314 by 2043. The structure is 78 ft (23.8 m) long and 36 ft wide.

CarriesS-43-29
CrossesSammy Swamp
Location3 MI NE of Pinewood
RouteState Highway 29
Coordinates33.77385, -80.44556
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length78 ft (23.8 m)
Longest span33 ft (10.1 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic1,314 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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-43-29 over Sammy Swamp built?

It was built in 1998, making it 27 years old in 2025.

What condition is S-43-29 over Sammy 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 June 2023.

How much traffic does S-43-29 over Sammy Swamp carry?

About 900 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is S-43-29 over Sammy Swamp?

The structure is 78 ft (23.8 m) long with a longest span of 33 ft (10.1 m) and a deck 36 ft wide.

Who owns S-43-29 over Sammy Swamp?

It is owned by the State Highway Agency.