US Bridges

S-54/MULBERRY RD over Indian Field Swamp

Fair

Dorchester County, South Carolina · 3.8 MI N ST George · Structure no. 000000000004104

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
105 ft
7 main spans
Daily traffic
325
2023 count
Owner
State
State Highway Agency

About this bridge

S-54/MULBERRY RD over Indian Field Swamp is a concrete slab carrying S-54/MULBERRY RD over Indian Field Swamp in Dorchester County, South Carolina. It was built in 1963, so it is 62 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 325 vehicles a day, roughly 5% of them trucks, projected to reach 416 by 2043. The structure is 105 ft (32 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesS-54/MULBERRY RD
CrossesIndian Field Swamp
Location3.8 MI N ST George
RouteState Highway 54
Coordinates33.2412, -80.57509
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 15
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2023)
Projected traffic416 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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-54/MULBERRY RD over Indian Field Swamp built?

It was built in 1963, making it 62 years old in 2025.

What condition is S-54/MULBERRY RD over Indian Field 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 May 2023.

How much traffic does S-54/MULBERRY RD over Indian Field Swamp carry?

About 325 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-54/MULBERRY RD over Indian Field Swamp?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-54/MULBERRY RD over Indian Field Swamp?

It is owned by the State Highway Agency.