US Bridges

S-26-140 over Mitchell Swamp

Fair

Horry County, South Carolina · 4 MI N Loris · Structure no. 000000000009210

Built
1997
28 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
131 ft
4 main spans
Daily traffic
650
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-140 over Mitchell Swamp is a concrete continuous slab carrying S-26-140 over Mitchell Swamp in Horry County, South Carolina. It was built in 1997, so it is 28 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.

It carries about 650 vehicles a day, roughly 5% of them trucks, projected to reach 949 by 2043. The structure is 131 ft (40 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-26-140
CrossesMitchell Swamp
Location4 MI N Loris
RouteState Highway 140
Coordinates34.12226, -78.89827
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 25 or greater
Structure length131 ft (40 m)
Longest span33 ft (10.1 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2023)
Projected traffic949 by 2043
Trucks5%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-26-140 over Mitchell Swamp built?

It was built in 1997, making it 28 years old in 2025.

What condition is S-26-140 over Mitchell 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 July 2023.

How much traffic does S-26-140 over Mitchell Swamp carry?

About 650 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-26-140 over Mitchell Swamp?

The structure is 131 ft (40 m) long with a longest span of 33 ft (10.1 m) and a deck 36 ft wide.

Who owns S-26-140 over Mitchell Swamp?

It is owned by the State Highway Agency.