US Bridges

S-16-68 over Swift Creek

Fair

Darlington County, South Carolina · In Darlington · Structure no. 000000000002508

Built
1957
68 years old, rebuilt 2002
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
105 ft
7 main spans
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-68 over Swift Creek is a concrete slab carrying S-16-68 over Swift Creek in Darlington County, South Carolina. It was built in 1957 and reconstructed in 2002, so it is 68 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 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 3,300 vehicles a day, roughly 3% of them trucks, projected to reach 1,980 by 2043. The structure is 105 ft (32 m) long and 29 ft wide.

CarriesS-16-68
CrossesSwift Creek
LocationIn Darlington
RouteState Highway 68
Coordinates34.31063, -79.87093
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 10
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic1,980 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$278,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-16-68 over Swift Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2002.

What condition is S-16-68 over Swift 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 January 2025.

How much traffic does S-16-68 over Swift Creek carry?

About 3,300 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S-16-68 over Swift Creek?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 29 ft wide.

Who owns S-16-68 over Swift Creek?

It is owned by the State Highway Agency.