US Bridges

I-185 over S-149

Poor

Greenville County, South Carolina · 2.2 MI SW Greenville · Structure no. 000000000002964

Built
1959
66 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
180 ft
3 main spans
Daily traffic
19,600
2023 count
Owner
State
State Highway Agency

About this bridge

I-185 over S-149 is a steel stringer/multi-beam or girder carrying I-185 over S-149 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 19,600 vehicles a day, roughly 4% of them trucks, projected to reach 28,028 by 2043. The structure is 180 ft (54.9 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesI-185
CrossesS-149
Location2.2 MI SW Greenville
RouteInterstate 185
CountyGreenville County
StateSouth Carolina
Coordinates34.81803, -82.41886
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,600 (2023)
Projected traffic28,028 by 2043
Trucks4%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-185 over S-149 built?

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

What condition is I-185 over S-149 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does I-185 over S-149 carry?

About 19,600 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is I-185 over S-149?

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 S-149?

It is owned by the State Highway Agency.