US Bridges

S-15-28 over Black Creek

Good

Colleton County, South Carolina · 10 MI SW Waltb · Structure no. 000000000001869

Built
2007
18 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
2 main spans
Daily traffic
225
2023 count
Owner
State
State Highway Agency

About this bridge

S-15-28 over Black Creek is a prestressed concrete box beam or girders - multiple carrying S-15-28 over Black Creek in Colleton County, South Carolina. It was built in 2007, so it is 18 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 225 vehicles a day, roughly 13% of them trucks, projected to reach 329 by 2043. The structure is 70 ft (21.3 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-15-28
CrossesBlack Creek
Location10 MI SW Waltb
RouteState Highway 28
Coordinates32.80507, -80.79509
Functional classRural Major Collector

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 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating47.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length70 ft (21.3 m)
Longest span40 ft (12.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic329 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 S-15-28 over Black Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is S-15-28 over Black 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 2023.

How much traffic does S-15-28 over Black Creek carry?

About 225 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is S-15-28 over Black Creek?

The structure is 70 ft (21.3 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns S-15-28 over Black Creek?

It is owned by the State Highway Agency.