US Bridges

S-28-40 over Flat Rock Creek

Good

Kershaw County, South Carolina · 11 MI N of Camden · Structure no. 000000000003345

Built
2005
20 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
125
2023 count
Owner
State
State Highway Agency

About this bridge

S-28-40 over Flat Rock Creek is a prestressed concrete slab carrying S-28-40 over Flat Rock Creek in Kershaw County, South Carolina. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 125 vehicles a day, roughly 15% of them trucks, projected to reach 183 by 2043. The structure is 100 ft (30.5 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS-28-40
CrossesFlat Rock Creek
Location11 MI N of Camden
RouteState Highway 40
CountyKershaw County
StateSouth Carolina
Coordinates34.40405, -80.64629
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length100 ft (30.5 m)
Longest span70 ft (21.3 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic183 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-28-40 over Flat Rock Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is S-28-40 over Flat Rock Creek 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 January 2025.

How much traffic does S-28-40 over Flat Rock Creek carry?

About 125 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is S-28-40 over Flat Rock Creek?

The structure is 100 ft (30.5 m) long with a longest span of 70 ft (21.3 m) and a deck 36 ft wide.

Who owns S-28-40 over Flat Rock Creek?

It is owned by the State Highway Agency.