US Bridges

US 178 over Trib to Rocky Bottom Crk

Fair

Pickens County, South Carolina · 13MI N of Pickens · Structure no. 000000000000614

Built
1932
93 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
56 ft
2 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

US 178 over Trib to Rocky Bottom Crk is a concrete tee beam carrying US 178 over Trib to Rocky Bottom Crk in Pickens County, South Carolina. It was built in 1932, so it is 93 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.

It carries about 500 vehicles a day, roughly 6% of them trucks, projected to reach 730 by 2043. The structure is 56 ft (17.1 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesUS 178
CrossesTrib to Rocky Bottom Crk
Location13MI N of Pickens
RouteU.S. Route 178
CountyPickens County
StateSouth Carolina
Coordinates35.05088, -82.81267
Functional classRural Major 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.2 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length56 ft (17.1 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic730 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 178 over Trib to Rocky Bottom Crk built?

It was built in 1932, making it 93 years old in 2025.

What condition is US 178 over Trib to Rocky Bottom Crk 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 May 2024.

How much traffic does US 178 over Trib to Rocky Bottom Crk carry?

About 500 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 178 over Trib to Rocky Bottom Crk?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns US 178 over Trib to Rocky Bottom Crk?

It is owned by the State Highway Agency.