US Bridges

US 378 over Little River

Good

McCormick County, South Carolina · 4.8MI SW of Mccormick · Structure no. 000000000000948

Built
2017
8 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
987 ft
9 main spans
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

US 378 over Little River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 378 over Little River in McCormick 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 2,700 vehicles a day, roughly 16% of them trucks, projected to reach 4,293 by 2043. The structure is 987 ft (300.8 m) long and 47 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesUS 378
CrossesLittle River
Location4.8MI SW of Mccormick
RouteU.S. Route 378
Coordinates33.8752, -82.36187
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHL 93
Structure length987 ft (300.8 m)
Longest span113 ft (34.4 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic4,293 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 378 over Little River built?

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

What condition is US 378 over Little River 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 June 2024.

How much traffic does US 378 over Little River carry?

About 2,700 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 378 over Little River?

The structure is 987 ft (300.8 m) long with a longest span of 113 ft (34.4 m) and a deck 47 ft wide.

Who owns US 378 over Little River?

It is owned by the State Highway Agency.