US Bridges

S-12-16 over Little Sandy River

Good

Chester County, South Carolina · 5.4 MI SW Chester · Structure no. 000000000008723

Built
1994
31 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
1 main span
Daily traffic
425
2023 count
Owner
State
State Highway Agency

About this bridge

S-12-16 over Little Sandy River is a steel stringer/multi-beam or girder carrying S-12-16 over Little Sandy River in Chester County, South Carolina. It was built in 1994, so it is 31 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 425 vehicles a day, roughly 13% of them trucks, projected to reach 621 by 2043. The structure is 150 ft (45.7 m) long and 37 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-12-16
CrossesLittle Sandy River
Location5.4 MI SW Chester
RouteState Highway 16
Coordinates34.63096, -81.24274
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span90 ft (27.4 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2023)
Projected traffic621 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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-12-16 over Little Sandy River built?

It was built in 1994, making it 31 years old in 2025.

What condition is S-12-16 over Little Sandy River 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-12-16 over Little Sandy River carry?

About 425 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is S-12-16 over Little Sandy River?

The structure is 150 ft (45.7 m) long with a longest span of 90 ft (27.4 m) and a deck 37 ft wide.

Who owns S-12-16 over Little Sandy River?

It is owned by the State Highway Agency.