US Bridges

S-26-99 over Br of Lake Swamp

Fair

Horry County, South Carolina · 3 MI N Galivants Ferry · Structure no. 000000000008753

Built
1994
31 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-99 over Br of Lake Swamp is a concrete continuous slab carrying S-26-99 over Br of Lake 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 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 500 vehicles a day, roughly 7% of them trucks, projected to reach 730 by 2043. The structure is 90 ft (27.4 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-26-99
CrossesBr of Lake Swamp
Location3 MI N Galivants Ferry
RouteState Highway 99
Coordinates34.09366, -79.20201
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic730 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-26-99 over Br of Lake Swamp built?

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

What condition is S-26-99 over Br of Lake 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-26-99 over Br of Lake Swamp carry?

About 500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S-26-99 over Br of Lake Swamp?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns S-26-99 over Br of Lake Swamp?

It is owned by the State Highway Agency.