US Bridges

C-39-517 over Trib to Hartwell

FairPosted for load

Pickens County, South Carolina · In Clemson · Structure no. 000000000005371

Built
1968
57 years old, rebuilt 1998
Condition
Fair
inspected April 2024
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
2,800
2023 count
Owner
County
County Highway Agency

About this bridge

C-39-517 over Trib to Hartwell is a prestressed concrete channel beam carrying C-39-517 over Trib to Hartwell in Pickens County, South Carolina. It was built in 1968 and reconstructed in 1998, so it is 57 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,800 vehicles a day, roughly 4% of them trucks, projected to reach 3,584 by 2043. The structure is 30 ft (9.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesC-39-517
CrossesTrib to Hartwell
LocationIn Clemson
RouteCounty Highway 517
Coordinates34.69637, -82.8279
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.1 US tons
Inventory rating7.2 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 10
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width34 ft (10.3 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic3,584 by 2043
Trucks4%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$236,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-39-517 over Trib to Hartwell built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1998.

What condition is C-39-517 over Trib to Hartwell 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 April 2024.

How much traffic does C-39-517 over Trib to Hartwell carry?

About 2,800 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is C-39-517 over Trib to Hartwell?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns C-39-517 over Trib to Hartwell?

It is owned by the County Highway Agency.