US Bridges

S-26-333 over Crabtree Swamp

Fair

Horry County, South Carolina · City of Conway · Structure no. 000000000009955

Built
1966
59 years old, rebuilt 2012
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
90 ft
6 main spans
Daily traffic
475
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-333 over Crabtree Swamp is a concrete slab carrying S-26-333 over Crabtree Swamp in Horry County, South Carolina. It was built in 1966 and reconstructed in 2012, so it is 59 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 5 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 475 vehicles a day, roughly 1% of them trucks, projected to reach 432 by 2043. The structure is 90 ft (27.4 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-26-333
CrossesCrabtree Swamp
LocationCity of Conway
RouteState Highway 333
Coordinates33.86116, -79.04626
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 10
Structure length90 ft (27.4 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2023)
Projected traffic432 by 2043
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$221,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-26-333 over Crabtree Swamp built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2012.

What condition is S-26-333 over Crabtree Swamp 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-26-333 over Crabtree Swamp carry?

About 475 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is S-26-333 over Crabtree Swamp?

The structure is 90 ft (27.4 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-26-333 over Crabtree Swamp?

It is owned by the State Highway Agency.