US Bridges

I-20 Spur over Jefferies Creek

Fair

Florence County, South Carolina · 2MI W of Florence · Structure no. 000000000005052

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
18,300
2023 count
Owner
State
State Highway Agency

About this bridge

I-20 Spur over Jefferies Creek is a concrete continuous culvert carrying I-20 Spur over Jefferies Creek in Florence County, South Carolina. It was built in 1967, so it is 58 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 18,300 vehicles a day, roughly 5% of them trucks, projected to reach 13,176 by 2043. The structure is 32 ft (9.7 m) long and 154 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-20 Spur
CrossesJefferies Creek
Location2MI W of Florence
RouteU.S. Route 20
Coordinates34.18857, -79.82734
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating49.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width154 ft (46.9 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,300 (2023)
Projected traffic13,176 by 2043
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-20 Spur over Jefferies Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-20 Spur over Jefferies 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 2024.

How much traffic does I-20 Spur over Jefferies Creek carry?

About 18,300 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is I-20 Spur over Jefferies Creek?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m) and a deck 154 ft wide.

Who owns I-20 Spur over Jefferies Creek?

It is owned by the State Highway Agency.