US Bridges

US 76/ US 378 over US 401

Fair

Sumter County, South Carolina · Town of Sumter · Structure no. 000000000002854

Built
1958
67 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
3 main spans
Daily traffic
14,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 76/ US 378 over US 401 is a prestressed concrete stringer/multi-beam or girder carrying US 76/ US 378 over US 401 in Sumter County, South Carolina. It was built in 1958, so it is 67 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 14,300 vehicles a day, roughly 12% of them trucks, projected to reach 15,587 by 2043. The structure is 170 ft (51.8 m) long and 62 ft wide.

Location

Open in Google Maps
CarriesUS 76/ US 378
CrossesUS 401
LocationTown of Sumter
RouteU.S. Route 76
CountySumter County
StateSouth Carolina
Coordinates33.93706, -80.31959
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span70 ft (21.3 m)
Deck width62 ft (19 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,300 (2023)
Projected traffic15,587 by 2043
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$65,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 76/ US 378 over US 401 built?

It was built in 1958, making it 67 years old in 2025.

What condition is US 76/ US 378 over US 401 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 76/ US 378 over US 401 carry?

About 14,300 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 76/ US 378 over US 401?

The structure is 170 ft (51.8 m) long with a longest span of 70 ft (21.3 m) and a deck 62 ft wide.

Who owns US 76/ US 378 over US 401?

It is owned by the State Highway Agency.