US Bridges

Sc 340 over Jeffries Creek

Good

Darlington County, South Carolina · 6MI S of Darlington · Structure no. 000000000001362

Built
1947
78 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Concrete
Length
120 ft
4 main spans
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 340 over Jeffries Creek is a concrete tee beam carrying Sc 340 over Jeffries Creek in Darlington County, South Carolina. It was built in 1947, so it is 78 years old, older 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 6,000 vehicles a day, roughly 10% of them trucks. The structure is 120 ft (36.6 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSc 340
CrossesJeffries Creek
Location6MI S of Darlington
RouteState Highway 340
Coordinates34.20889, -79.90778
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic—
Trucks10%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$165,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sc 340 over Jeffries Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is Sc 340 over Jeffries 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 2024.

How much traffic does Sc 340 over Jeffries Creek carry?

About 6,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sc 340 over Jeffries Creek?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.

Who owns Sc 340 over Jeffries Creek?

It is owned by the State Highway Agency.