US Bridges

I-185 Sbl over Proposed Magna RR

Good

Greenville County, South Carolina · South of Greenville · Structure no. 000000000009629

Built
1999
26 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
4,150
2023 count
Owner
State
State Highway Agency

About this bridge

I-185 Sbl over Proposed Magna RR is a prestressed concrete continuous stringer/multi-beam or girder carrying I-185 Sbl over Proposed Magna RR 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 4,150 vehicles a day, roughly 9% of them trucks, projected to reach 5,935 by 2043. The structure is 161 ft (49.1 m) long and 58 ft wide.

CarriesI-185 Sbl
CrossesProposed Magna RR
LocationSouth of Greenville
RouteInterstate 185
Coordinates34.72328, -82.37976
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length161 ft (49.1 m)
Longest span75 ft (22.9 m)
Deck width58 ft (17.6 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,150 (2023)
Projected traffic5,935 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
TollOn a toll 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-185 Sbl over Proposed Magna RR built?

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

What condition is I-185 Sbl over Proposed Magna RR 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 Sbl over Proposed Magna RR carry?

About 4,150 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-185 Sbl over Proposed Magna RR?

The structure is 161 ft (49.1 m) long with a longest span of 75 ft (22.9 m) and a deck 58 ft wide.

Who owns I-185 Sbl over Proposed Magna RR?

It is owned by the State Highway Agency.