US Bridges

S-39-30 over US 123

Fair

Pickens County, South Carolina · 3.0 MI E Clemson · Structure no. 000000000003965

Built
1962
63 years old, rebuilt 1980
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
218 ft
4 main spans
Daily traffic
8,600
2023 count
Owner
State
State Highway Agency

About this bridge

S-39-30 over US 123 is a prestressed concrete stringer/multi-beam or girder carrying S-39-30 over US 123 in Pickens County, South Carolina. It was built in 1962 and reconstructed in 1980, so it is 63 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,600 vehicles a day, roughly 2% of them trucks, projected to reach 10,578 by 2043. The structure is 218 ft (66.4 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-39-30
CrossesUS 123
Location3.0 MI E Clemson
RouteState Highway 30
Coordinates34.68809, -82.78816
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating16.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length218 ft (66.4 m)
Longest span56 ft (17.1 m)
Deck width52 ft (15.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,600 (2023)
Projected traffic10,578 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$417,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-39-30 over US 123 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1980.

What condition is S-39-30 over US 123 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 November 2024.

How much traffic does S-39-30 over US 123 carry?

About 8,600 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-39-30 over US 123?

The structure is 218 ft (66.4 m) long with a longest span of 56 ft (17.1 m) and a deck 52 ft wide.

Who owns S-39-30 over US 123?

It is owned by the State Highway Agency.