US Bridges

US 123 NB over U.S. 178

Fair

Pickens County, South Carolina · 1.5MI SE of Liberty · Structure no. 000000000003958

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
155 ft
3 main spans
Daily traffic
14,450
2023 count
Owner
State
State Highway Agency

About this bridge

US 123 NB over U.S. 178 is a prestressed concrete stringer/multi-beam or girder carrying US 123 NB over U.S. 178 in Pickens County, South Carolina. It was built in 1962, 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 14,450 vehicles a day, roughly 6% of them trucks, projected to reach 16,184 by 2043. The structure is 155 ft (47.2 m) long and 32 ft wide.

CarriesUS 123 NB
CrossesU.S. 178
Location1.5MI SE of Liberty
RouteU.S. Route 123
Coordinates34.77554, -82.67079
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length155 ft (47.2 m)
Longest span55 ft (16.8 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,450 (2023)
Projected traffic16,184 by 2043
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 123 NB over U.S. 178 built?

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

What condition is US 123 NB over U.S. 178 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 June 2024.

How much traffic does US 123 NB over U.S. 178 carry?

About 14,450 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 123 NB over U.S. 178?

The structure is 155 ft (47.2 m) long with a longest span of 55 ft (16.8 m) and a deck 32 ft wide.

Who owns US 123 NB over U.S. 178?

It is owned by the State Highway Agency.