US Bridges

Sc 31 Sbl over Wetlands

Good

Horry County, South Carolina · 20.8 MI NE Socastee · Structure no. 000000000009784

Built
2002
23 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
22,450
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 31 Sbl over Wetlands is a prestressed concrete box beam or girders - multiple carrying Sc 31 Sbl over Wetlands in Horry County, South Carolina. It was built in 2002, so it is 23 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 22,450 vehicles a day, roughly 5% of them trucks, projected to reach 64,881 by 2043. The structure is 40 ft (12.2 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSc 31 Sbl
CrossesWetlands
Location20.8 MI NE Socastee
RouteState Highway 31
Coordinates33.83241, -78.71559
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating65.7 US tons
Inventory rating27.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,450 (2023)
Projected traffic64,881 by 2043
Trucks5%
Lanes on structure3
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 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 31 Sbl over Wetlands built?

It was built in 2002, making it 23 years old in 2025.

What condition is Sc 31 Sbl over Wetlands 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 Sc 31 Sbl over Wetlands carry?

About 22,450 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sc 31 Sbl over Wetlands?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 59 ft wide.

Who owns Sc 31 Sbl over Wetlands?

It is owned by the State Highway Agency.