US Bridges

C-4-10405 over Trib to Six Twenty Creek

Fair

Anderson County, South Carolina · 14.2 MI NE of Anderson · Structure no. 000000000009956

Built
2012
13 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-10405 over Trib to Six Twenty Creek is a prestressed concrete box beam or girders - multiple carrying C-4-10405 over Trib to Six Twenty Creek in Anderson County, South Carolina. It was built in 2012, so it is 13 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 50 vehicles a day, projected to reach 64 by 2043. The structure is 25 ft (7.6 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesC-4-10405
CrossesTrib to Six Twenty Creek
Location14.2 MI NE of Anderson
RouteCounty Highway 10405
Coordinates34.69333, -82.57083
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic64 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 C-4-10405 over Trib to Six Twenty Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is C-4-10405 over Trib to Six Twenty 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 November 2023.

How much traffic does C-4-10405 over Trib to Six Twenty Creek carry?

About 50 vehicles per day (2023 count).

How long is C-4-10405 over Trib to Six Twenty Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 33 ft wide.

Who owns C-4-10405 over Trib to Six Twenty Creek?

It is owned by the County Highway Agency.