US Bridges

S-5-75 over Colston Branch

PoorPosted for load

Bamberg County, South Carolina · 4MI N Ehrhardt · Structure no. 000000000001998

Built
1954
71 years old
Condition
Poor
inspected April 2023
Type
Slab
Concrete
Length
84 ft
6 main spans
Daily traffic
150
2023 count
Owner
State
State Highway Agency

About this bridge

S-5-75 over Colston Branch is a concrete slab carrying S-5-75 over Colston Branch in Bamberg County, South Carolina. It was built in 1954, so it is 71 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 15% of them trucks, projected to reach 209 by 2043. The structure is 84 ft (25.6 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesS-5-75
CrossesColston Branch
Location4MI N Ehrhardt
RouteState Highway 75
CountyBamberg County
StateSouth Carolina
Coordinates33.1491, -81.02396
Functional classRural Minor 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 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating8.3 US tons
Inventory rating6.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadH 10
Structure length84 ft (25.6 m)
Longest span14 ft (4.3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic209 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$402,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-5-75 over Colston Branch built?

It was built in 1954, making it 71 years old in 2025.

What condition is S-5-75 over Colston 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 2023.

How much traffic does S-5-75 over Colston Branch carry?

About 150 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is S-5-75 over Colston Branch?

The structure is 84 ft (25.6 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.

Who owns S-5-75 over Colston Branch?

It is owned by the State Highway Agency.