US Bridges

S-12-818 over Conrad Creek

Fair

Chester County, South Carolina · 7.5 MI N. Chester · Structure no. 000000000007548

Built
1982
43 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
25
2023 count
Owner
State
State Highway Agency

About this bridge

S-12-818 over Conrad Creek is a concrete slab carrying S-12-818 over Conrad Creek in Chester County, South Carolina. It was built in 1982, so it is 43 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 5 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 32 by 2043. The structure is 45 ft (13.7 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesS-12-818
CrossesConrad Creek
Location7.5 MI N. Chester
RouteState Highway 818
CountyChester County
StateSouth Carolina
Coordinates34.80765, -81.17653
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic32 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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-12-818 over Conrad Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is S-12-818 over Conrad 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 December 2024.

How much traffic does S-12-818 over Conrad Creek carry?

About 25 vehicles per day (2023 count).

How long is S-12-818 over Conrad Creek?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-12-818 over Conrad Creek?

It is owned by the State Highway Agency.