US Bridges

S-4-71 over Big Generostee CR

Good

Anderson County, South Carolina · 2.1MI NW Anderson · Structure no. 000000000001597

Built
2004
21 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
1,800
2023 count
Owner
State
State Highway Agency

About this bridge

S-4-71 over Big Generostee CR is a prestressed concrete slab carrying S-4-71 over Big Generostee CR in Anderson County, South Carolina. It was built in 2004, so it is 21 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 1,800 vehicles a day, roughly 6% of them trucks, projected to reach 2,214 by 2043. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-4-71
CrossesBig Generostee CR
Location2.1MI NW Anderson
RouteState Highway 71
Coordinates34.51764, -82.67957
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2023)
Projected traffic2,214 by 2043
Trucks6%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-4-71 over Big Generostee CR built?

It was built in 2004, making it 21 years old in 2025.

What condition is S-4-71 over Big Generostee 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 January 2025.

How much traffic does S-4-71 over Big Generostee CR carry?

About 1,800 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S-4-71 over Big Generostee CR?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns S-4-71 over Big Generostee CR?

It is owned by the State Highway Agency.