US Bridges

S-28-12 over I-20

Fair

Kershaw County, South Carolina · 4 MI SE Camden · Structure no. 000000000006127

Built
1972
53 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
349 ft
4 main spans
Daily traffic
3,800
2023 count
Owner
State
State Highway Agency

About this bridge

S-28-12 over I-20 is a steel stringer/multi-beam or girder carrying S-28-12 over I-20 in Kershaw County, South Carolina. It was built in 1972, so it is 53 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,800 vehicles a day, roughly 4% of them trucks, projected to reach 5,548 by 2043. The structure is 349 ft (106.4 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-28-12
CrossesI-20
Location4 MI SE Camden
RouteState Highway 12
Coordinates34.21509, -80.55256
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length349 ft (106.4 m)
Longest span121 ft (36.9 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2023)
Projected traffic5,548 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-28-12 over I-20 built?

It was built in 1972, making it 53 years old in 2025.

What condition is S-28-12 over I-20 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does S-28-12 over I-20 carry?

About 3,800 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-28-12 over I-20?

The structure is 349 ft (106.4 m) long with a longest span of 121 ft (36.9 m) and a deck 48 ft wide.

Who owns S-28-12 over I-20?

It is owned by the State Highway Agency.