US Bridges

S-12-306 over Kirkpatrick Creek

Fair

Chester County, South Carolina · 12.3MI NW Chester · Structure no. 000000000007987

Built
1986
39 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
105 ft
7 main spans
Daily traffic
25
2023 count
Owner
State
State Highway Agency

About this bridge

S-12-306 over Kirkpatrick Creek is a concrete slab carrying S-12-306 over Kirkpatrick Creek in Chester County, South Carolina. It was built in 1986, so it is 39 years old, younger 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 25 vehicles a day, projected to reach 35 by 2043. The structure is 105 ft (32 m) long and 36 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesS-12-306
CrossesKirkpatrick Creek
Location12.3MI NW Chester
RouteState Highway 306
Coordinates34.81553, -81.38411
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic35 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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-12-306 over Kirkpatrick Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is S-12-306 over Kirkpatrick Creek 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 January 2025.

How much traffic does S-12-306 over Kirkpatrick Creek carry?

About 25 vehicles per day (2023 count).

How long is S-12-306 over Kirkpatrick Creek?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 36 ft wide.

Who owns S-12-306 over Kirkpatrick Creek?

It is owned by the State Highway Agency.