US Bridges

S-26-97 over Maple Swamp

Good

Horry County, South Carolina · 6 MI E Conway · Structure no. 000000000004810

Built
2004
21 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
900
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-97 over Maple Swamp is a prestressed concrete slab carrying S-26-97 over Maple Swamp in Horry County, South Carolina. It was built in 2004, so it is 21 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 900 vehicles a day, roughly 9% of them trucks, projected to reach 1,314 by 2043. The structure is 60 ft (18.3 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-26-97
CrossesMaple Swamp
Location6 MI E Conway
RouteState Highway 97
Coordinates33.94184, -78.99438
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic1,314 by 2043
Trucks9%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-26-97 over Maple Swamp built?

It was built in 2004, making it 21 years old in 2025.

What condition is S-26-97 over Maple 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 July 2023.

How much traffic does S-26-97 over Maple Swamp carry?

About 900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is S-26-97 over Maple Swamp?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns S-26-97 over Maple Swamp?

It is owned by the State Highway Agency.