US Bridges

S-5-20 over South Edisto River

Poor

Bamberg County, South Carolina · 5MI NE Bamberg · Structure no. 000000000005889

Built
1971
54 years old
Condition
Poor
inspected April 2024
Type
Slab
Concrete
Length
165 ft
11 main spans
Daily traffic
900
2023 count
Owner
State
State Highway Agency

About this bridge

S-5-20 over South Edisto River is a concrete slab carrying S-5-20 over South Edisto River in Bamberg County, South Carolina. It was built in 1971, so it is 54 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 4 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.

It carries about 900 vehicles a day, roughly 15% of them trucks, projected to reach 1,314 by 2043. The structure is 165 ft (50.3 m) long and 33 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesS-5-20
CrossesSouth Edisto River
Location5MI NE Bamberg
RouteState Highway 20
Coordinates33.31388, -80.96509
Functional classRural Major Collector

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans11
Design loadH 10
Structure length165 ft (50.3 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic1,314 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$903,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-5-20 over South Edisto River built?

It was built in 1971, making it 54 years old in 2025.

What condition is S-5-20 over South Edisto River 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 April 2024.

How much traffic does S-5-20 over South Edisto River carry?

About 900 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is S-5-20 over South Edisto River?

The structure is 165 ft (50.3 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-5-20 over South Edisto River?

It is owned by the State Highway Agency.