US Bridges

S-5-20 over Brier Branch

Poor

Bamberg County, South Carolina · 3MI NE Bamberg · Structure no. 000000000004044

Built
1963
62 years old
Condition
Poor
inspected April 2024
Type
Slab
Concrete
Length
75 ft
5 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

S-5-20 over Brier Branch is a concrete slab carrying S-5-20 over Brier Branch in Bamberg County, South Carolina. It was built in 1963, so it is 62 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 500 vehicles a day, roughly 15% of them trucks, projected to reach 730 by 2043. The structure is 75 ft (22.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesS-5-20
CrossesBrier Branch
Location3MI NE Bamberg
RouteState Highway 20
Coordinates33.31888, -81.0026
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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 10
Structure length75 ft (22.9 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic730 by 2043
Trucks15%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$444,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-5-20 over Brier Branch built?

It was built in 1963, making it 62 years old in 2025.

What condition is S-5-20 over Brier Branch 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 Brier Branch carry?

About 500 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is S-5-20 over Brier Branch?

The structure is 75 ft (22.9 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-5-20 over Brier Branch?

It is owned by the State Highway Agency.