Editing Interstate 170 (section)

==History==
I-170 was originally intended to provide an [[inner beltway]] within I-270 through [[St. Louis County, Missouri|St. Louis County]] extending to [[Interstate 55 in Missouri|I-55]] in the southern part of the county, commonly called South County;<ref>{{cite news |title = Hundreds of Homes Face Razing for New Highway |last = Sutin |first = Phil |last2 = Hopgood |first2 = Mei-Ling |date = January 9, 1997 |work = [[St. Louis Post-Dispatch]] }}</ref> however, the portion of the route south of I-64/[[U.S. Route 40 in Missouri|US Route&nbsp;40]] (US&nbsp;40) was canceled due to [[Highway revolt|local opposition]]. The portion of [[MetroLink (St. Louis)|MetroLink]]'s Cross County Extension south of I-64 runs roughly along the proposed alignment.<ref>{{cite news |title = Westfall Sours On Extension of Interstate 170 |last = Sutin |first = Phil |date = March 14, 1997 |work = [[St. Louis Post-Dispatch]] }}</ref>

The southern portion of I-170 was built using St. Louis County funds in the 1960s through a shallow valley. It was signed as Route&nbsp;725.

===Recent construction===
The southern two interchanges on I-170 (at I-64/US&nbsp;40 and Galleria Parkway) were reconstructed as part of the first phase of the New I-64 project. Most notably, the new interchange includes direct access to I-170 from eastbound I-64; however, access to [[Saint Louis Galleria|Galleria Parkway]] from northbound I-170 was eliminated. Eager Road access to and from I-170 was also revised in the New I-64 project.<ref name="I-64">{{cite web |url = http://www.thenewi64.org/ProjectOverview.do |title = Project Overview |access-date = May 28, 2007 |work = The New I-64 |publisher = [[Missouri Department of Transportation]] |archive-url = https://web.archive.org/web/20070504060100/http://www.thenewi64.org/ProjectOverview.do |archive-date = May 4, 2007 |url-status = dead }}</ref>