US Bridges

S-26-137 over Socastee Swamp

Good

Horry County, South Carolina · 3 MI N. of Myrtle Beach · Structure no. 000000000009883

Built
2004
21 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
250
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-137 over Socastee Swamp is a concrete continuous slab carrying S-26-137 over Socastee Swamp in Horry County, South Carolina. It was built in 2004, so it is 21 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2043. The structure is 150 ft (45.7 m) long and 114 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesS-26-137
CrossesSocastee Swamp
Location3 MI N. of Myrtle Beach
RouteState Highway 137
Coordinates33.73344, -78.94203
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating54.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width114 ft (34.7 m)
Roadway width98 ft (29.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic320 by 2043
Trucks5%
Lanes on structure7
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
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-26-137 over Socastee Swamp built?

It was built in 2004, making it 21 years old in 2025.

What condition is S-26-137 over Socastee 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 July 2023.

How much traffic does S-26-137 over Socastee Swamp carry?

About 250 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-26-137 over Socastee Swamp?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 114 ft wide.

Who owns S-26-137 over Socastee Swamp?

It is owned by the State Highway Agency.