US Bridges

C-37-509 over Trib to W Fork Little Ri

GoodPosted for load

Oconee County, South Carolina · 10.2 MI N Walhalla · Structure no. 000000000007924

Built
1985
40 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
60 ft
2 main spans
Daily traffic
200
2023 count
Owner
County
County Highway Agency

About this bridge

C-37-509 over Trib to W Fork Little Ri is a prestressed concrete slab carrying C-37-509 over Trib to W Fork Little Ri in Oconee County, South Carolina. It was built in 1985, so it is 40 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 5% of them trucks, projected to reach 256 by 2043. The structure is 60 ft (18.3 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC-37-509
CrossesTrib to W Fork Little Ri
Location10.2 MI N Walhalla
RouteCounty Highway 509
Coordinates34.91512, -83.06942
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.4 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic256 by 2043
Trucks5%
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

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-37-509 over Trib to W Fork Little Ri built?

It was built in 1985, making it 40 years old in 2025.

What condition is C-37-509 over Trib to W Fork Little Ri 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-37-509 over Trib to W Fork Little Ri carry?

About 200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-37-509 over Trib to W Fork Little Ri?

The structure is 60 ft (18.3 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns C-37-509 over Trib to W Fork Little Ri?

It is owned by the County Highway Agency.