US Bridges

I-185 over Sc 20 Con

Fair

Greenville County, South Carolina · 3.0 MI SW Greenville · Structure no. 000000000002963

Built
1959
66 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
180 ft
3 main spans
Daily traffic
14,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-185 over Sc 20 Con is a steel stringer/multi-beam or girder carrying I-185 over Sc 20 Con in Greenville County, South Carolina. It was built in 1959, so it is 66 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 5 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 14,500 vehicles a day, roughly 9% of them trucks, projected to reach 20,735 by 2043. The structure is 180 ft (54.9 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesI-185
CrossesSc 20 Con
Location3.0 MI SW Greenville
RouteInterstate 185
CountyGreenville County
StateSouth Carolina
Coordinates34.80706, -82.42256
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width59 ft (18 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2023)
Projected traffic20,735 by 2043
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$110,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-185 over Sc 20 Con built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-185 over Sc 20 Con 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 July 2024.

How much traffic does I-185 over Sc 20 Con carry?

About 14,500 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-185 over Sc 20 Con?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 59 ft wide.

Who owns I-185 over Sc 20 Con?

It is owned by the State Highway Agency.