US Bridges

S-26-218 over Crab Tree Swamp

Good

Horry County, South Carolina · 2MI W Conway · Structure no. 000000000008754

Built
1994
31 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
4,600
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-218 over Crab Tree Swamp is a concrete slab carrying S-26-218 over Crab Tree Swamp in Horry County, South Carolina. It was built in 1994, so it is 31 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 4,600 vehicles a day, roughly 5% of them trucks, projected to reach 5,888 by 2043. The structure is 60 ft (18.3 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-26-218
CrossesCrab Tree Swamp
Location2MI W Conway
RouteState Highway 218
Coordinates33.85649, -79.09818
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span15 ft (4.6 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2023)
Projected traffic5,888 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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-26-218 over Crab Tree Swamp built?

It was built in 1994, making it 31 years old in 2025.

What condition is S-26-218 over Crab Tree 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 June 2024.

How much traffic does S-26-218 over Crab Tree Swamp carry?

About 4,600 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-26-218 over Crab Tree Swamp?

The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 37 ft wide.

Who owns S-26-218 over Crab Tree Swamp?

It is owned by the State Highway Agency.