US Bridges

S-21-26 over Black Creek

Fair

Florence County, South Carolina · 4.0 MI N Florence · Structure no. 000000000007888

Built
1985
40 years old, rebuilt 2016
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
270 ft
9 main spans
Daily traffic
6,300
2023 count
Owner
State
State Highway Agency

About this bridge

S-21-26 over Black Creek is a concrete slab carrying S-21-26 over Black Creek in Florence County, South Carolina. It was built in 1985 and reconstructed in 2016, so it is 40 years old, younger 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 6 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 6,300 vehicles a day, roughly 12% of them trucks, projected to reach 4,221 by 2043. The structure is 270 ft (82.3 m) long and 79 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesS-21-26
CrossesBlack Creek
Location4.0 MI N Florence
RouteState Highway 26
CountyFlorence County
StateSouth Carolina
Coordinates34.24384, -79.74567
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span30 ft (9.1 m)
Deck width79 ft (24.1 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic4,221 by 2043
Trucks12%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 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-21-26 over Black Creek built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2016.

What condition is S-21-26 over Black Creek 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 April 2023.

How much traffic does S-21-26 over Black Creek carry?

About 6,300 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is S-21-26 over Black Creek?

The structure is 270 ft (82.3 m) long with a longest span of 30 ft (9.1 m) and a deck 79 ft wide.

Who owns S-21-26 over Black Creek?

It is owned by the State Highway Agency.