US Bridges

I-95 SB over Indian Field Swamp

Fair

Dorchester County, South Carolina · 4 MI N of ST George · Structure no. 000000000006086

Built
1972
53 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
150 ft
5 main spans
Daily traffic
25,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 SB over Indian Field Swamp is a concrete slab carrying I-95 SB over Indian Field Swamp in Dorchester County, South Carolina. It was built in 1972, so it is 53 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 25,800 vehicles a day, roughly 22% of them trucks, projected to reach 45,150 by 2043. The structure is 150 ft (45.7 m) long and 43 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesI-95 SB
CrossesIndian Field Swamp
Location4 MI N of ST George
RouteInterstate 95
Coordinates33.24355, -80.58141
Functional classRural Principal Arterial - Interstate

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,800 (2023)
Projected traffic45,150 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-95 SB over Indian Field Swamp built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-95 SB 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 July 2024.

How much traffic does I-95 SB over Indian Field Swamp carry?

About 25,800 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-95 SB over Indian Field Swamp?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns I-95 SB over Indian Field Swamp?

It is owned by the State Highway Agency.