US Bridges

I-20 over Stoop Creek

Good

Lexington County, South Carolina · 2 MI SE of Seven Oaks · Structure no. 000000000004367

Built
1964
61 years old, rebuilt 1978
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
88,300
2023 count
Owner
State
State Highway Agency

About this bridge

I-20 over Stoop Creek is a concrete culvert carrying I-20 over Stoop Creek in Lexington County, South Carolina. It was built in 1964 and reconstructed in 1978, so it is 61 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 88,300 vehicles a day, roughly 11% of them trucks, projected to reach 109,492 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI-20
CrossesStoop Creek
Location2 MI SE of Seven Oaks
RouteInterstate 20
Coordinates34.035, -81.11556
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,300 (2023)
Projected traffic109,492 by 2043
Trucks11%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 over Stoop Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1978.

What condition is I-20 over Stoop 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 November 2023.

How much traffic does I-20 over Stoop Creek carry?

About 88,300 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is I-20 over Stoop Creek?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns I-20 over Stoop Creek?

It is owned by the State Highway Agency.