US Bridges

S-16-18 over Black Creek

PoorPosted for load

Darlington County, South Carolina · In Hartsville · Structure no. 000000000005498

Built
1969
56 years old, rebuilt 1997
Condition
Poor
inspected January 2025
Type
Slab
Concrete
Length
135 ft
9 main spans
Daily traffic
3,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-18 over Black Creek is a concrete slab carrying S-16-18 over Black Creek in Darlington County, South Carolina. It was built in 1969 and reconstructed in 1997, so it is 56 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 3,700 vehicles a day, roughly 8% of them trucks, projected to reach 5,217 by 2043. The structure is 135 ft (41.1 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-16-18
CrossesBlack Creek
LocationIn Hartsville
RouteState Highway 18
Coordinates34.3866, -80.06364
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.2 US tons
Inventory rating11.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans9
Design loadH 15
Structure length135 ft (41.1 m)
Longest span15 ft (4.6 m)
Deck width38 ft (11.7 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2023)
Projected traffic5,217 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$824,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-16-18 over Black Creek built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1997.

What condition is S-16-18 over Black Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does S-16-18 over Black Creek carry?

About 3,700 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-16-18 over Black Creek?

The structure is 135 ft (41.1 m) long with a longest span of 15 ft (4.6 m) and a deck 38 ft wide.

Who owns S-16-18 over Black Creek?

It is owned by the State Highway Agency.