US Bridges

Sc 51 over Little Swamp

Good

Florence County, South Carolina · 1 MI NW of Salem · Structure no. 000000000010320

Built
2018
7 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
1,550
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 51 over Little Swamp is a concrete continuous slab carrying Sc 51 over Little Swamp in Florence County, South Carolina. It was built in 2018, so it is 7 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 1,550 vehicles a day, roughly 13% of them trucks, projected to reach 2,465 by 2043. The structure is 100 ft (30.5 m) long and 92 ft wide.

Location

Open in Google Maps
CarriesSc 51
CrossesLittle Swamp
Location1 MI NW of Salem
RouteState Highway 51
CountyFlorence County
StateSouth Carolina
Coordinates33.89877, -79.51904
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating46.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width92 ft (28.1 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2023)
Projected traffic2,465 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 Sc 51 over Little Swamp built?

It was built in 2018, making it 7 years old in 2025.

What condition is Sc 51 over Little 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 2023.

How much traffic does Sc 51 over Little Swamp carry?

About 1,550 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Sc 51 over Little Swamp?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 92 ft wide.

Who owns Sc 51 over Little Swamp?

It is owned by the State Highway Agency.