US Bridges

Sc 70 over S. Edisto River

Fair

Orangeburg County, South Carolina · 16MI SW of Orangeburg · Structure no. 000000000002591

Built
1957
68 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
450 ft
15 main spans
Daily traffic
3,200
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 70 over S. Edisto River is a concrete tee beam carrying Sc 70 over S. Edisto River in Orangeburg County, South Carolina. It was built in 1957, so it is 68 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 5 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 3,200 vehicles a day, roughly 7% of them trucks, projected to reach 5,088 by 2043. The structure is 450 ft (137.2 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSc 70
CrossesS. Edisto River
Location16MI SW of Orangeburg
RouteState Highway 70
CountyOrangeburg County
StateSouth Carolina
Coordinates33.37568, -81.08229
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans15
Design loadHS 15
Structure length450 ft (137.2 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic5,088 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 70 over S. Edisto River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Sc 70 over S. 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 November 2023.

How much traffic does Sc 70 over S. Edisto River carry?

About 3,200 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Sc 70 over S. Edisto River?

The structure is 450 ft (137.2 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns Sc 70 over S. Edisto River?

It is owned by the State Highway Agency.