US Bridges

S-26-31 over Waccamaw River

Fair

Horry County, South Carolina · 2 MI N Hickory Grove · Structure no. 000000000006882

Built
1976
49 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
245 ft
8 main spans
Daily traffic
6,400
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-31 over Waccamaw River is a concrete slab carrying S-26-31 over Waccamaw River in Horry County, South Carolina. It was built in 1976, so it is 49 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,400 vehicles a day, roughly 5% of them trucks, projected to reach 10,176 by 2043. The structure is 245 ft (74.7 m) long and 35 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesS-26-31
CrossesWaccamaw River
Location2 MI N Hickory Grove
RouteState Highway 31
Coordinates33.8993, -78.83972
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 15
Structure length245 ft (74.7 m)
Longest span35 ft (10.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic10,176 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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-26-31 over Waccamaw River built?

It was built in 1976, making it 49 years old in 2025.

What condition is S-26-31 over Waccamaw River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does S-26-31 over Waccamaw River carry?

About 6,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-26-31 over Waccamaw River?

The structure is 245 ft (74.7 m) long with a longest span of 35 ft (10.7 m) and a deck 35 ft wide.

Who owns S-26-31 over Waccamaw River?

It is owned by the State Highway Agency.