US Bridges

S-32-278 over Twelvemile Creek

Fair

Lexington County, South Carolina · 6 MI SW of Lexington · Structure no. 000000000008367

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
60 ft
4 main spans
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-32-278 over Twelvemile Creek is a concrete slab carrying S-32-278 over Twelvemile Creek in Lexington County, South Carolina. It was built in 1990, so it is 35 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 2,700 vehicles a day, roughly 8% of them trucks, projected to reach 5,238 by 2024. The structure is 60 ft (18.3 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-32-278
CrossesTwelvemile Creek
Location6 MI SW of Lexington
RouteState Highway 278
Coordinates33.94472, -81.33139
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span15 ft (4.6 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic5,238 by 2024
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-32-278 over Twelvemile Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is S-32-278 over Twelvemile 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 September 2024.

How much traffic does S-32-278 over Twelvemile Creek carry?

About 2,700 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-32-278 over Twelvemile Creek?

The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 38 ft wide.

Who owns S-32-278 over Twelvemile Creek?

It is owned by the State Highway Agency.