US Bridges

S-16-42 over Swift Creek

Good

Darlington County, South Carolina · In Darlington · Structure no. 000000000002713

Built
2011
14 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
5,500
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-42 over Swift Creek is a concrete continuous slab carrying S-16-42 over Swift Creek in Darlington County, South Carolina. It was built in 2011, so it is 14 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 5,500 vehicles a day, roughly 4% of them trucks, projected to reach 7,040 by 2043. The structure is 120 ft (36.6 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-16-42
CrossesSwift Creek
LocationIn Darlington
RouteState Highway 42
Coordinates34.30054, -79.903
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2023)
Projected traffic7,040 by 2043
Trucks4%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-16-42 over Swift Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is S-16-42 over Swift 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 January 2025.

How much traffic does S-16-42 over Swift Creek carry?

About 5,500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-16-42 over Swift Creek?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns S-16-42 over Swift Creek?

It is owned by the State Highway Agency.