US Bridges

C-26-440 over Halfway Swamp

Fair

Horry County, South Carolina · 7.0 MI S of Conway · Structure no. 000000000000113

Built
1920
105 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

C-26-440 over Halfway Swamp is a concrete culvert carrying C-26-440 over Halfway Swamp in Horry County, South Carolina. It was built in 1920, so it is 105 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2024. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC-26-440
CrossesHalfway Swamp
Location7.0 MI S of Conway
RouteCounty Highway 440
Coordinates33.75139, -79.0825
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic320 by 2024
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$62,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-26-440 over Halfway Swamp built?

It was built in 1920, making it 105 years old in 2025.

What condition is C-26-440 over Halfway 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 December 2024.

How much traffic does C-26-440 over Halfway Swamp carry?

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

How long is C-26-440 over Halfway Swamp?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns C-26-440 over Halfway Swamp?

It is owned by the County Highway Agency.