US Bridges

US 178 over Rocky Bottom Creek

Good

Pickens County, South Carolina · 16MI NW of Pickens · Structure no. 000000000000613

Built
1932
93 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
700
2023 count
Owner
State
State Highway Agency

About this bridge

US 178 over Rocky Bottom Creek is a concrete culvert carrying US 178 over Rocky Bottom Creek 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 700 vehicles a day, roughly 10% of them trucks, projected to reach 1,022 by 2043. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesUS 178
CrossesRocky Bottom Creek
Location16MI NW of Pickens
RouteU.S. Route 178
Coordinates35.04544, -82.80246
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic1,022 by 2043
Trucks10%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 178 over Rocky Bottom Creek built?

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

What condition is US 178 over Rocky Bottom Creek 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 May 2024.

How much traffic does US 178 over Rocky Bottom Creek carry?

About 700 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 178 over Rocky Bottom Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns US 178 over Rocky Bottom Creek?

It is owned by the State Highway Agency.