US Bridges

Sc 51 over Big Swamp

Good

Florence County, South Carolina · In Hyman · Structure no. 000000000000028

Built
2007
18 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
3,200
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 51 over Big Swamp is a concrete continuous slab carrying Sc 51 over Big Swamp in Florence County, South Carolina. It was built in 2007, so it is 18 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 3,200 vehicles a day, roughly 8% of them trucks, projected to reach 5,088 by 2043. The structure is 120 ft (36.6 m) long and 47 ft wide.

CarriesSc 51
CrossesBig Swamp
LocationIn Hyman
RouteState Highway 51
Coordinates33.99722, -79.58777
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic5,088 by 2043
Trucks8%
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 Big Swamp built?

It was built in 2007, making it 18 years old in 2025.

What condition is Sc 51 over Big 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 Big Swamp carry?

About 3,200 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Sc 51 over Big Swamp?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns Sc 51 over Big Swamp?

It is owned by the State Highway Agency.