US Bridges

Sc 4 over Trib N. Edisto River

Fair

Orangeburg County, South Carolina · City of Orangeburg · Structure no. 000000000006756

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
6,400
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 4 over Trib N. Edisto River is a concrete culvert carrying Sc 4 over Trib N. Edisto River in Orangeburg County, South Carolina. It was built in 1975, so it is 50 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 6,400 vehicles a day, roughly 10% of them trucks, projected to reach 9,024 by 2043. The structure is 21 ft (6.3 m) long and 107 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSc 4
CrossesTrib N. Edisto River
LocationCity of Orangeburg
RouteState Highway 4
CountyOrangeburg County
StateSouth Carolina
Coordinates33.47709, -80.86367
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width107 ft (32.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic9,024 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Sc 4 over Trib N. Edisto River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sc 4 over Trib N. Edisto River 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 August 2023.

How much traffic does Sc 4 over Trib N. Edisto River carry?

About 6,400 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sc 4 over Trib N. Edisto River?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 107 ft wide.

Who owns Sc 4 over Trib N. Edisto River?

It is owned by the State Highway Agency.