Interstate 585 South Carolina
Interstate 585 is a short spur overlapping with U.S. 176 (N Pine Street) southeast from I-85 into Spartanburg. A diamond interchange joins the north end of I-585 with I-85/U.S. 176 at signalized intersections near Lone Oak. U.S. 176 was upgraded to Interstate standards southeast from the adjacent intersection with Upper Valley Falls Road / Fairforest Road to the University of South Carolina Upstate (USCS) campus by 2006. The original freeway for I-585 stretches 2.25 miles southeast from Business Loop I-85 into the city of Spartanburg by Pinewood Shopping Center.
Despite I-585 shields posted along U.S. 176 north to I-85, South Carolina Department of Transportation (GIS) data inventories only the section of U.S. 176 (N Pine Street) south from Business Loop I-85 as part of Interstate 585. Exit numbers for Interstate 585 utilize the mileposts of U.S. 176 starting from the North Carolina state line.
U.S. 176/S.C. 9 extend southeast along N Pine Street 0.57 miles to Garner Road. This section of arterial was formerly a part of Business Spur I-585. The last shield for the spur was removed after 2004, though a reassurance marker for I-585 north remains posted as of 2021.
Jim D’Amato, senior transportation planner with Spartanburg County, indicated that transportation planners were working on ramp upgrades and improvements to bring U.S. 176 to Interstate standards in order to tie into Interstate 85. He indicated that “Interstates have to link” in an article published by the Herald-Journal on February 2, 2005.4 Completed in 2006, work however left three at-grade intersections, including two at the diamond interchange with I-85.
There remain no plans to upgrade the exchange between I-85 and U.S. 176 to a freeway to freeway interchange. The US 176 Corridor Improvements underway between Winter 2017 and Winter 2018 instead made center median improvements and coordinated traffic signals from Springfield Road east to Fairforest Road. The $1.7 million project was approved on December 3, 2009.8
Source: December 31, 2021 Interstate Route Log and Finders List
Portions of the original alignment of Interstate 85 through Upstate South Carolina were constructed in the 1940s as a bypass for U.S. 29. The substandard and narrow design through Spartanburg led to the relocated I-85, which was built between 1988 and 1995.
Interstate 585 opened as a freeway for U.S. 176 in 1957.1,5 It was built in conjunction with projects to upgrade the U.S. 29 bypass of Spartanburg to Interstate 85.
Efforts to relocate Interstate 85 away from Spartanburg onto a new alignment in 1983 led to a Spartanburg Area Transportation Study (SPATS) committee vote in 1984 pertaining to area highways. The SPATS recommendation to the South Carolina Highway Department included an access improvement plan for both Interstate 585 and Asheville Highway (S.C. 56). A study presented to Spartanburg City Council in May 1984 recommended designating both I-585 and S.C. 56 as primary routes to and from the Spartanburg central business district while renumbering the old I-85 as Interstate 285 once the new alignment for I-85 opened to the north.
Improvements proposed for I-585 and S.C. 56 included new way finding signs for Uptown Spartanburg, extending street lighting, replacing Hearon Circle with a diamond interchange and building a half cloverleaf interchange between Pine Street (Business Spur I-585 / U.S. 176) and McCravy Drive. The SPATS committee however differed from a city council study, suggesting the highway department consider an alternative to the McCravy Drive interchange.10 Upgrades at Hearon Circle and for Pine Street at McCravy Drive were never implemented.
The new alignment for Interstate 85 opened to traffic in August 1995. SCDOT received approval from the American Association of State Highway and Transportation Officials (AASHTO) for both the relocation of I-85 and the recognition of Business Loop I-85 on April 22, 1995. This left I-585 as a spur from the cloverleaf interchange with the business route by the Milliken Arboretum.
U.S. 176 was upgraded to Interstate standards from Business Loop I-85 northwest to Interstate 85 as part of a two phase project starting in 2003. The first phase involved interchange construction at both Campus Boulevard to USCS and Valley Falls Road. Phase two focused on upgrading the remainder of U.S. 176 to I-85.2 Costing $62 million, road work was formally completed following a ribbon cutting ceremony held on October 25, 2006.3
Further south in Spartanburg, a $3.5 million project added a new off-ramp from Interstate 585 east to S.C. 9 (Church Street), replacing an adjacent ramp to U.S. 221 (Whitney Road). The work modified the entrance ramp bringing S.C. 9 south onto I-585 into a distributor roadway connecting the new S.C. 9 exit with U.S. 221. This replaced a weaving traffic pattern on the I-585 mainline leftover from the 1950s design of the freeway. Construction on the ten month long project started in May 2005.4
The California Avenue overpass at Exit 24 was damaged by a tractor trailer hauling machinery in January 2014. The incident dislocated the span by nearly five feet, leading to its closure and subsequent demolition.5 A $12 million project followed to replace both the damaged span and to raise the height on the nearby bridge carrying S.C. 9 over I-585 by two feet.6 The California Avenue bridge reopened in March 2015. Associated repaving along I-585 and work on the S.C. 9 overpass were completed in mid June 2015.7
North End – Southern Shops, South Carolina
North West at
North End – Lone Oak, South Carolina
North West at
South East at
South End – Spartanburg, South Carolina
I-585 concludes south of the exchange (Exit 25) with S.C. 9 (Boiling Springs Road) north, Church Street (U.S. 176 Connector) south and adjacent U.S. 221 (Whitney Road). U.S. 221 runs north toward Cherokee Springs while overtaking Church Street south to Downtown Spartanburg. Photo by Carter Buchanan (08/20/21).
West North at
A remnant from when Business Spur I-585 was posted along N Pine Street, this set of shields marking I-585 stands along U.S. 176/S.C. 9 north of Garner Road in Spartanburg. 05/25/21
U.S. 221 leads 14 miles north from Exit 25B to the city of Chesnee. I-585/U.S. 176 (N Pine Street) advance northwest to Lone Oak and Southern Shops. 12/15/16
- Interstate 585 (Kurumi).
- “Agency mapping new route to USCS.” Herald-Journal (Spartanburg, SC), February 12, 2001.
- “Millions aid Spartanburg traffic flow.” Herald-Journal (Spartanburg, SC), December 6, 2007.
- “Highway project near USC Upstate open to drivers.” Herald-Journal (Spartanburg, SC), October 14, 2006.
- “Project will smooth rough intersection.” Herald-Journal (Spartanburg, SC), February 2, 2005.
- “Pine Street lane closures announced to demolish California Avenue Bridge.” Herald-Journal (Spartanburg, SC), June 26, 2014.
- “Work continues on Interstate 585 bridge.” Herald-Journal (Spartanburg, SC), February 2, 2015.
- “Highway 9 bridge reopens to traffic after being closed for repairs.” Herald-Journal (Spartanburg, SC), June 19, 2015.
- Project Information – US 176 Corridor Improvements, Project Identification Number: 0039714RD01. SCDOT web site.
- “Asheville Highway, I-585 Access Improvements Recommended.” Herald-Journal (Spartanburg, SC), June 16, 1984.
Page updated July 1, 2022.