US Bridges

Sc 146 over I-85

Fair

Greenville County, South Carolina · 5.5 MI SE of Greenville · Structure no. 000000000008072

Built
1987
38 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
259 ft
3 main spans
Daily traffic
16,100
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 146 over I-85 is a steel continuous stringer/multi-beam or girder carrying Sc 146 over I-85 in Greenville County, South Carolina. It was built in 1987, so it is 38 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 16,100 vehicles a day, roughly 3% of them trucks, projected to reach 20,447 by 2043. The structure is 259 ft (78.9 m) long and 87 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSc 146
CrossesI-85
Location5.5 MI SE of Greenville
RouteState Highway 146
CountyGreenville County
StateSouth Carolina
Coordinates34.82911, -82.30318
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length259 ft (78.9 m)
Longest span122 ft (37.2 m)
Deck width87 ft (26.6 m)
Roadway width75 ft (23 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,100 (2023)
Projected traffic20,447 by 2043
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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$462,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sc 146 over I-85 built?

It was built in 1987, making it 38 years old in 2025.

What condition is Sc 146 over I-85 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 September 2024.

How much traffic does Sc 146 over I-85 carry?

About 16,100 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Sc 146 over I-85?

The structure is 259 ft (78.9 m) long with a longest span of 122 ft (37.2 m) and a deck 87 ft wide.

Who owns Sc 146 over I-85?

It is owned by the State Highway Agency.