US Bridges

Sc 9 Sbl over Buck Swamp Branch

Good

Horry County, South Carolina · 7.5 MI SE of Loris · Structure no. 000000000007803

Built
1984
41 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete
Length
60 ft
2 main spans
Daily traffic
9,500
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 9 Sbl over Buck Swamp Branch is a concrete slab carrying Sc 9 Sbl over Buck Swamp Branch in Horry County, South Carolina. It was built in 1984, so it is 41 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 9,500 vehicles a day, roughly 8% of them trucks, projected to reach 16,530 by 2024. The structure is 60 ft (18.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSc 9 Sbl
CrossesBuck Swamp Branch
Location7.5 MI SE of Loris
RouteState Highway 9
Coordinates34.01222, -78.77806
Functional classRural Principal Arterial - Other

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 inspectionNovember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2023)
Projected traffic16,530 by 2024
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 9 Sbl over Buck Swamp Branch built?

It was built in 1984, making it 41 years old in 2025.

What condition is Sc 9 Sbl over Buck Swamp Branch 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 November 2024.

How much traffic does Sc 9 Sbl over Buck Swamp Branch carry?

About 9,500 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Sc 9 Sbl over Buck Swamp Branch?

The structure is 60 ft (18.3 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns Sc 9 Sbl over Buck Swamp Branch?

It is owned by the State Highway Agency.