Interstate 170

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An I-170 used to exist in Baltimore, Maryland.

Interstate 170 Auxiliary route of the Interstate Highway System
Length:	11.17 mi[1] (17.98 km)
South end:	I-64/US 40 in Richmond Heights, MO
Major junctions:	Route 340 in University City, MO SSR D in Overland, MO Route 180 in Charlack, MO Route 115 in St. John, MO I-70 in Berkeley, MO
North end:	I-270 in Hazelwood, MO
Missouri Highways < US 169 Route 171 > Supplemental - Decommissioned

Interstate 170 (abbreviated I-170) is the designation for an interstate route in the St. Louis, Missouri metropolitan area. I-170, also known as the Inner Belt Expressway, is an 11.17 mile freeway traveling north-south through the St. Louis suburbs of Hazelwood, Berkeley, St. John, Charlack, Vinita Park, Sycamore Hills, Bel-Ridge, Olivette,Overland, University City, Ladue, Clayton, and Richmond Heights, ending just north of the city of Brentwood.

I-170 connects to Interstate 270 at its northern terminus and I-64 at its southern terminus; at Exits 7A and 7B, I-170 crosses its parent, I-70. I-170 also provides access to Lambert-St. Louis International Airport.

Once the Daniel Boone Expressway was signed as I-64, I-170 was no longer a true spur route.

[edit] Trivia

• The southern portion of I-170 was built using St. Louis County funds in the 1960s. It was signed as Route 725.
• I-170 was originally intended to provide an inner beltway within I-270 through St. Louis County extending to I-55 in the South County area; however, the portion of the route south of I-64/US-40 was cancelled due to local opposition. The portion of Metrolink's Cross County Extension south of I-64 runs roughly along the proposed alignment.
• The southern two interchanges on I-170 (at I-64/US-40 and Galleria Boulevard) are to be reconstructed as part of the New I-64 project beginning in 2007. Most notably, the new interchange will include direct access to I-170 from eastbound I-64.

[edit] Interchanges from south to north

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[edit] See also

	edit Auxiliary routes of Interstate 70
	Current and Future (F)	Former
	Missouri	Maryland
	Colorado - Illinois-Missouri - Ohio - Maryland
	Maryland
	Kansas - Missouri - Ohio-West Virginia
	Ohio - Kansas-Missouri

[edit] References

1. ^ Route Log - Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 2

[edit] External links

• Kurumi.com: Interstate 170