US Bridges

I-185 NB over I-85

Good

Greenville County, South Carolina · 5.0 SW of Greenville · Structure no. 000000000010359

Built
1999
26 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
295 ft
4 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

I-185 NB over I-85 is a steel continuous stringer/multi-beam or girder carrying I-185 NB over I-85 in Greenville County, South Carolina. It was built in 1999, so it is 26 years old, younger 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 1,450 vehicles a day, roughly 9% of them trucks, projected to reach 1,972 by 2043. The structure is 295 ft (89.9 m) long and 41 ft wide.

CarriesI-185 NB
CrossesI-85
Location5.0 SW of Greenville
RouteInterstate 185
Coordinates34.78987, -82.43901
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length295 ft (89.9 m)
Longest span105 ft (32.1 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic1,972 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-185 NB over I-85 built?

It was built in 1999, making it 26 years old in 2025.

What condition is I-185 NB over I-85 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 July 2024.

How much traffic does I-185 NB over I-85 carry?

About 1,450 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-185 NB over I-85?

The structure is 295 ft (89.9 m) long with a longest span of 105 ft (32.1 m) and a deck 41 ft wide.

Who owns I-185 NB over I-85?

It is owned by the State Highway Agency.