US Bridges

S-39-160 over Trib to Keowee River

PoorPosted for load

Pickens County, South Carolina · 3.0MI W Six Mile · Structure no. 000000000002820

Built
1958
67 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete
Length
75 ft
5 main spans
Daily traffic
2,800
2023 count
Owner
State
State Highway Agency

About this bridge

S-39-160 over Trib to Keowee River is a concrete slab carrying S-39-160 over Trib to Keowee River in Pickens County, South Carolina. It was built in 1958, so it is 67 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 2,800 vehicles a day, roughly 6% of them trucks, projected to reach 4,088 by 2043. The structure is 75 ft (22.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesS-39-160
CrossesTrib to Keowee River
Location3.0MI W Six Mile
RouteState Highway 160
Coordinates34.79527, -82.87429
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 10
Structure length75 ft (22.9 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2023)
Projected traffic4,088 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$464,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-39-160 over Trib to Keowee River built?

It was built in 1958, making it 67 years old in 2025.

What condition is S-39-160 over Trib to Keowee River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does S-39-160 over Trib to Keowee River carry?

About 2,800 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S-39-160 over Trib to Keowee River?

The structure is 75 ft (22.9 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-39-160 over Trib to Keowee River?

It is owned by the State Highway Agency.