US Bridges

I-95 SB over Black Swamp (no. 4)

Fair

Clarendon County, South Carolina · 15MI NE of Manning · Structure no. 000000000005265

Built
1968
57 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
150 ft
5 main spans
Daily traffic
16,300
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 SB over Black Swamp (no. 4) is a concrete tee beam carrying I-95 SB over Black Swamp (no. 4) in Clarendon County, South Carolina. It was built in 1968, so it is 57 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 16,300 vehicles a day, roughly 23% of them trucks, projected to reach 28,525 by 2043. The structure is 150 ft (45.7 m) long and 41 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesI-95 SB
CrossesBlack Swamp (no. 4)
Location15MI NE of Manning
RouteInterstate 95
CountyClarendon County
StateSouth Carolina
Coordinates33.83867, -80.12773
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating62.8 US tons
Inventory rating48.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,300 (2023)
Projected traffic28,525 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Black Swamp (no. 4) built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-95 SB over Black Swamp (no. 4) 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 September 2023.

How much traffic does I-95 SB over Black Swamp (no. 4) carry?

About 16,300 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-95 SB over Black Swamp (no. 4)?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.

Who owns I-95 SB over Black Swamp (no. 4)?

It is owned by the State Highway Agency.