US Bridges

S-26-23 over Lousing Swamp

FairPosted for load

Horry County, South Carolina · 3 MI NE Aynor · Structure no. 000000000006985

Built
1977
48 years old, rebuilt 2020
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-23 over Lousing Swamp is a concrete slab carrying S-26-23 over Lousing Swamp in Horry County, South Carolina. It was built in 1977 and reconstructed in 2020, so it is 48 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 2,700 vehicles a day, roughly 7% of them trucks, projected to reach 3,942 by 2043. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesS-26-23
CrossesLousing Swamp
Location3 MI NE Aynor
RouteState Highway 23
CountyHorry County
StateSouth Carolina
Coordinates34.03469, -79.15159
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic3,942 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$141,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-26-23 over Lousing Swamp built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2020.

What condition is S-26-23 over Lousing 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 2024.

How much traffic does S-26-23 over Lousing Swamp carry?

About 2,700 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S-26-23 over Lousing Swamp?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-26-23 over Lousing Swamp?

It is owned by the State Highway Agency.