US Bridges

Sc 70 over Roberts Swamp

PoorClosed to traffic

Orangeburg County, South Carolina · 5MI W of Cope · Structure no. 000000000002593

Built
1957
68 years old
Condition
Poor
inspected November 2023
Type
Culvert
Concrete
Length
51 ft
4 main spans
Daily traffic
3,100
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 70 over Roberts Swamp is a concrete culvert carrying Sc 70 over Roberts Swamp 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 poor condition with a lowest component rating of 1 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 3,100 vehicles a day, roughly 7% of them trucks, projected to reach 4,929 by 2043. The structure is 51 ft (15.4 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesSc 70
CrossesRoberts Swamp
Location5MI W of Cope
RouteState Highway 70
CountyOrangeburg County
StateSouth Carolina
Coordinates33.38754, -81.03826
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert1 Imminent FailureMajor deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 20
Structure length51 ft (15.4 m)
Longest span12 ft (3.7 m)
Deck width45 ft (13.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2023)
Projected traffic4,929 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Roberts Swamp built?

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

What condition is Sc 70 over Roberts Swamp in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does Sc 70 over Roberts Swamp carry?

About 3,100 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Sc 70 over Roberts Swamp?

The structure is 51 ft (15.4 m) long with a longest span of 12 ft (3.7 m) and a deck 45 ft wide.

Who owns Sc 70 over Roberts Swamp?

It is owned by the State Highway Agency.