Interstate 585

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Interstate 585 marker

Interstate 585
I-585 highlighted in red
Route information
Auxiliary route of I-85
Maintained by SCDOT
Length2.25 mi[1][2] (3.62 km)
Existed1962[citation needed]–present
Major junctions
South end US 176 / US 221 / SC 9 in Spartanburg
North end I-85 Bus. / US 176 near Spartanburg
Highway system
SC 576US 601

Interstate 585 (I-585) is a spur route of I-85, which connects Spartanburg, South Carolina in the United States.

Route description[edit]

I-585 is co-signed the entire length with U.S. Route 176 (US 176) and it uses US 176's exit number system instead of its own. Between exits 23 (I-85 Business) and 25B (US 221) the road is a freeway but has substandard or no shoulders. To the south of exit 25B, US 176 becomes boulevard grade, where I-585 ends.[3]


The location of I-585 was planned as I-26 in this 1955 map. The connection along US 221 was never built.

This highway was once connected to I-85 from opening until 1995; that year, I-85 was moved north to bypass Spartanburg, leaving I-585 as an orphan, segregated from the rest of the Interstate Highway system. There is a project underway to extend I-585 along US 176 to I-85's new location.[4] The ramps from I-585 southbound to I-85 Bus. north and south opened on October 9, 2006; subsequent ramps between the two roads have since been reopened including a large fly-over ramp that overpasses the East Campus Boulevard exit.[citation needed]

Currently, US 176 remains a freeway north of the I-85 Bus. interchange until a traffic signal with Upper Valley Falls Road, prior the interchange with I-85. Some vehicles on US 176 must cross oncoming traffic in order to access a some directions of I-85 as it is a typical diamond interchange.

Exit list[edit]

Exit numbers are based on US 176 mileage. The entire route is in Spartanburg County.

Spartanburg2.253.62 US 176 east / SC 9 south (Pine Street)Continuation as US 176/SC 9
2.213.5625 US 221 (Boiling Springs Road) / SC 9 north (Church Street / Whitney Road) – Chesnee, Roebuck, Boiling SpringsSigned exit 25B (US 221) and 25A (SC 9 northbound) for I-585 northbound; no northbound entrance from exit 25A; northern end of SC 9 concurrency
24California Avenue
Southern ShopsValley Falls line0.000.0023 I-85 Bus. – Charlotte, GreenvilleCurrent northern terminus; signed as exits 23A (south) and 23B (north)
1.302.09East Campus Boulevard – USC UpstateExit open, but not formally part of I-585
0.801.29Valley Falls RoadExit open, but not formally part of I-585
0.000.00 I-85 / US 176 west – Charlotte, Greenville, InmanFuture northern terminus; future western end of US 176 concurrency, diamond interchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Interstate 585 Business[edit]

Interstate 585 Business
LocationSpartanburg, South Carolina
Length1.60 mi[5] (2.57 km)

Interstate 585 Business (I-585 Bus) was a boulevard-grade business spur of I-585 along Pine Street, between Whitney Road (US 221) and St. John Street (US 29). It ran concurrently with US 176 and SC 9. Sometime between 2000 and 2012, the route was removed, with no current state or federal maps listing it, nor any physical signage.

See also[edit]


  1. ^ "Route Log and Finder List - Interstate System: Table 2". FHWA. Retrieved 2007-10-04.
  2. ^ a b "Statewide Highways (shapefile)" (zip). South Carolina Department of Transportation. September 29, 2017. Retrieved December 8, 2017.
  3. ^ a b Google (May 20, 2013). "Overview map of I-585" (Map). Google Maps. Google. Retrieved May 20, 2013.
  4. ^ "Interstate 585". Retrieved 5 October 2014.[self-published source]
  5. ^ Google (May 19, 2013). "Business Spur 585" (Map). Google Maps. Google. Retrieved May 19, 2013.

External links[edit]

Route map:

KML is from Wikidata