US Bridges

I-585 over U.S. 221

Fair

Spartanburg County, South Carolina · 1.5 MI N of Sptbg · Structure no. 000000000002832

Built
1958
67 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
142 ft
1 main span
Daily traffic
28,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-585 over U.S. 221 is a steel stringer/multi-beam or girder carrying I-585 over U.S. 221 in Spartanburg County, South Carolina. It was built in 1958, so it is 67 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 28,800 vehicles a day, roughly 7% of them trucks, projected to reach 36,000 by 2043. The structure is 142 ft (43.3 m) long and 69 ft wide.

Location

Open in Google Maps
CarriesI-585
CrossesU.S. 221
Location1.5 MI N of Sptbg
RouteInterstate 585
CountySpartanburg County
StateSouth Carolina
Coordinates34.97271, -81.93882
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span73 ft (22.3 m)
Deck width69 ft (21 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,800 (2023)
Projected traffic36,000 by 2043
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-585 over U.S. 221 built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-585 over U.S. 221 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 February 2024.

How much traffic does I-585 over U.S. 221 carry?

About 28,800 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-585 over U.S. 221?

The structure is 142 ft (43.3 m) long with a longest span of 73 ft (22.3 m) and a deck 69 ft wide.

Who owns I-585 over U.S. 221?

It is owned by the State Highway Agency.