US Bridges

US 15 over S.C. 151 Bus.

Fair

Darlington County, South Carolina · 1MI S Hartsville · Structure no. 000000000005009

Built
1967
58 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
189 ft
3 main spans
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 15 over S.C. 151 Bus. is a prestressed concrete stringer/multi-beam or girder carrying US 15 over S.C. 151 Bus. in Darlington County, South Carolina. It was built in 1967, so it is 58 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 6,000 vehicles a day, roughly 11% of them trucks, projected to reach 8,460 by 2043. The structure is 189 ft (57.6 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 15
CrossesS.C. 151 Bus.
Location1MI S Hartsville
RouteU.S. Route 15
CountyDarlington County
StateSouth Carolina
Coordinates34.35625, -80.05884
Functional classUrban 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.
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 inspectionJanuary 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 rating68.6 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length189 ft (57.6 m)
Longest span63 ft (19.2 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic8,460 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed9.9 mi (16 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$459,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 15 over S.C. 151 Bus. built?

It was built in 1967, making it 58 years old in 2025.

What condition is US 15 over S.C. 151 Bus. 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 January 2024.

How much traffic does US 15 over S.C. 151 Bus. carry?

About 6,000 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 15 over S.C. 151 Bus.?

The structure is 189 ft (57.6 m) long with a longest span of 63 ft (19.2 m) and a deck 36 ft wide.

Who owns US 15 over S.C. 151 Bus.?

It is owned by the State Highway Agency.