US Bridges

C-4-147 over Trib to Big CR

Fair

Anderson County, South Carolina · 11.4 MI NE of Anderson · Structure no. 000000000004701

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
450
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-147 over Trib to Big CR is a steel stringer/multi-beam or girder carrying C-4-147 over Trib to Big CR in Anderson County, South Carolina. It was built in 1966, so it is 59 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 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 450 vehicles a day, roughly 3% of them trucks, projected to reach 824 by 2043. The structure is 27 ft (8.2 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC-4-147
CrossesTrib to Big CR
Location11.4 MI NE of Anderson
RouteCounty Highway 147
CountyAnderson County
StateSouth Carolina
Coordinates34.5925, -82.47694
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2023)
Projected traffic824 by 2043
Trucks3%
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

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-4-147 over Trib to Big CR built?

It was built in 1966, making it 59 years old in 2025.

What condition is C-4-147 over Trib to Big CR 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 C-4-147 over Trib to Big CR carry?

About 450 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is C-4-147 over Trib to Big CR?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns C-4-147 over Trib to Big CR?

It is owned by the County Highway Agency.