US Bridges

US 378 over High Hill Creek

Good

Florence County, South Carolina · 4MI NE of Lake City · Structure no. 000000000001369

Built
2017
8 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 378 over High Hill Creek is a concrete continuous slab carrying US 378 over High Hill Creek in Florence County, South Carolina. It was built in 2017, so it is 8 years old, younger 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 6,000 vehicles a day, roughly 18% of them trucks, projected to reach 10,440 by 2043. The structure is 90 ft (27.4 m) long and 86 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 378
CrossesHigh Hill Creek
Location4MI NE of Lake City
RouteU.S. Route 378
Coordinates33.91519, -79.69662
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width86 ft (26.3 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic10,440 by 2043
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 378 over High Hill Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is US 378 over High Hill 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 March 2024.

How much traffic does US 378 over High Hill Creek carry?

About 6,000 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is US 378 over High Hill Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 86 ft wide.

Who owns US 378 over High Hill Creek?

It is owned by the State Highway Agency.