US Bridges

I-85 over Big Shoally Creek

Fair

Spartanburg County, South Carolina · 2.4 MI N of Spartanburg · Structure no. 000000000008667

Built
1993
32 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
48 ft
3 main spans
Daily traffic
70,900
2023 count
Owner
State
State Highway Agency

About this bridge

I-85 over Big Shoally Creek is a concrete culvert carrying I-85 over Big Shoally Creek in Spartanburg County, South Carolina. It was built in 1993, so it is 32 years old, younger 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 70,900 vehicles a day, roughly 23% of them trucks, projected to reach 88,625 by 2043. The structure is 48 ft (14.6 m) long and 150 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-85
CrossesBig Shoally Creek
Location2.4 MI N of Spartanburg
RouteInterstate 85
Coordinates35.0125, -81.95194
Functional classUrban Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating107.1 US tons
Inventory rating72.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span15 ft (4.6 m)
Deck width150 ft (45.7 m)
Roadway width120 ft (36.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70,900 (2023)
Projected traffic88,625 by 2043
Trucks23%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-85 over Big Shoally Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is I-85 over Big Shoally 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 February 2024.

How much traffic does I-85 over Big Shoally Creek carry?

About 70,900 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-85 over Big Shoally Creek?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.6 m) and a deck 150 ft wide.

Who owns I-85 over Big Shoally Creek?

It is owned by the State Highway Agency.