US Bridges

C-4-61 over 6 & 20 CR

Good

Anderson County, South Carolina · 4.7 MI NE of Anderson · Structure no. 000000000003806

Built
2007
18 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
294 ft
3 main spans
Daily traffic
6,100
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-61 over 6 & 20 CR is a prestressed concrete continuous stringer/multi-beam or girder carrying C-4-61 over 6 & 20 CR in Anderson County, South Carolina. It was built in 2007, so it is 18 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 6,100 vehicles a day, roughly 4% of them trucks, projected to reach 7,503 by 2043. The structure is 294 ft (89.6 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesC-4-61
Crosses6 & 20 CR
Location4.7 MI NE of Anderson
RouteCounty Highway 68
Coordinates34.56681, -82.67571
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating103.6 US tons
Inventory rating32.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length294 ft (89.6 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2023)
Projected traffic7,503 by 2043
Trucks4%
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-4-61 over 6 & 20 CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is C-4-61 over 6 & 20 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 October 2023.

How much traffic does C-4-61 over 6 & 20 CR carry?

About 6,100 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is C-4-61 over 6 & 20 CR?

The structure is 294 ft (89.6 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns C-4-61 over 6 & 20 CR?

It is owned by the County Highway Agency.