US Bridges

S-12-136 over Trib to South Fork CR

Good

Chester County, South Carolina · 5MI NW Richburg · Structure no. 000000000009146

Built
1997
28 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
325
2023 count
Owner
State
State Highway Agency

About this bridge

S-12-136 over Trib to South Fork CR is a concrete continuous slab carrying S-12-136 over Trib to South Fork CR in Chester County, South Carolina. It was built in 1997, so it is 28 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 325 vehicles a day, roughly 5% of them trucks, projected to reach 416 by 2043. The structure is 79 ft (24.1 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesS-12-136
CrossesTrib to South Fork CR
Location5MI NW Richburg
RouteState Highway 136
Coordinates34.77907, -81.06586
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.2 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckCorrugated steel
Main spans3
Design loadHS 25 or greater
Structure length79 ft (24.1 m)
Longest span33 ft (10.1 m)
Deck width37 ft (11.2 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2023)
Projected traffic416 by 2043
Trucks5%
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 S-12-136 over Trib to South Fork CR built?

It was built in 1997, making it 28 years old in 2025.

What condition is S-12-136 over Trib to South Fork CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does S-12-136 over Trib to South Fork CR carry?

About 325 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-12-136 over Trib to South Fork CR?

The structure is 79 ft (24.1 m) long with a longest span of 33 ft (10.1 m) and a deck 37 ft wide.

Who owns S-12-136 over Trib to South Fork CR?

It is owned by the State Highway Agency.