US Bridges

C-4-808 over Trib to Mountain CR

Good

Anderson County, South Carolina · 6.3 MI SW of Anderson · Structure no. 000000000005210

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
48 ft
4 main spans
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-808 over Trib to Mountain CR is a aluminum, wrought iron, or cast iron culvert carrying C-4-808 over Trib to Mountain CR in Anderson County, South Carolina. It was built in 2011, so it is 14 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 48 ft (14.6 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesC-4-808
CrossesTrib to Mountain CR
Location6.3 MI SW of Anderson
RouteCounty Highway 808
Coordinates34.41487, -82.69742
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans4
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span9 ft (2.7 m)
Deck width56 ft (17.1 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic160 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-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-4-808 over Trib to Mountain CR built?

It was built in 2011, making it 14 years old in 2025.

What condition is C-4-808 over Trib to Mountain CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does C-4-808 over Trib to Mountain CR carry?

About 125 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-4-808 over Trib to Mountain CR?

The structure is 48 ft (14.6 m) long with a longest span of 9 ft (2.7 m) and a deck 56 ft wide.

Who owns C-4-808 over Trib to Mountain CR?

It is owned by the County Highway Agency.