US Bridges

Sc 6 over Twelvemile Creek

Fair

Lexington County, South Carolina · Town of Lexington · Structure no. 000000000000436

Built
1930
95 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
90 ft
3 main spans
Daily traffic
23,800
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 6 over Twelvemile Creek is a concrete tee beam carrying Sc 6 over Twelvemile Creek in Lexington County, South Carolina. It was built in 1930, so it is 95 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 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 23,800 vehicles a day, roughly 4% of them trucks, projected to reach 32,130 by 2043. The structure is 90 ft (27.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSc 6
CrossesTwelvemile Creek
LocationTown of Lexington
RouteState Highway 6
CountyLexington County
StateSouth Carolina
Coordinates33.97353, -81.23576
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,800 (2023)
Projected traffic32,130 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$335,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 6 over Twelvemile Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Sc 6 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 October 2023.

How much traffic does Sc 6 over Twelvemile Creek carry?

About 23,800 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Sc 6 over Twelvemile Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 40 ft wide.

Who owns Sc 6 over Twelvemile Creek?

It is owned by the State Highway Agency.