Interstate 170
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- An I-170 used to exist in Baltimore, Maryland.
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 a 11.17 mile highway 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 Interstate 64 at its southern terminus; at Exits 7A and 7B, I-170 crosses its parent, I-70. Interstate 170 also provides access to Lambert-St. Louis International Airport.
[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/U.S. 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/U.S. 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
| County | Municipality | Exit | Notes | |
|---|---|---|---|---|
| Exit number | Intersecting Road(s) | |||
| St. Louis | Richmond Heights | 0* | Eager Rd.; Brentwood Blvd. | Terminus |
| St. Louis | Richmond Heights | 1A | East Interstate 64/U.S. Route 40 | Southbound only |
| St. Louis | Richmond Heights | 1B | West Interstate 64/U.S. Route 40 | Southbound only |
| St. Louis | Richmond Heights | 1C | Galleria Pkwy. | Northbound only |
| St. Louis | Clayton | 1D | Brentwood Blvd. Southbound | Southbound only |
| St. Louis | Clayton | 1E | Forest Park Pkwy. | |
| St. Louis | Clayton | 1F | Ladue Rd. | |
| St. Louis | Clayton | 2 | Delmar Blvd. | |
| St. Louis | University City | 3/3A&3B | Route 340, Olive Blvd. | Exit 3 Northbound, Exits 3A&3B Southbound Interchange to be converted to a SPUI in 2006 |
| St. Louis | Overland | 4 | SSR D, Page Ave. | |
| St. Louis | Charlack | 5 | Route 180, St. Charles Rock Rd. | |
| St. Louis | St. John | 6 | Route 115, Natural Bridge Rd. | |
| St. Louis | Berkeley | 7A | East Interstate 70 | |
| St. Louis | Berkeley | 7B | West Interstate 70 | |
| St. Louis | Berkeley | 7C | Lambert-St Louis Airport | Northbound only |
| St. Louis | Berkeley | 8 | N. Hanley Rd.; Scudder Rd. | |
| St. Louis | Berkeley | 9A | Airport Rd. | |
| St. Louis | Berkeley | 9B | Boeing Plant | Northbound only |
| St. Louis | Berkeley | 9C | N. Hanley Rd. | Northbound only |
| St. Louis | Hazelwood | 10A | West Interstate 270 | Northbound only |
| St. Louis | Hazelwood | 10B | East Interstate 270 | Northbound only; Terminus |
[edit] Links
 |
Auxiliary routes of Interstate 70 |
| I-170 | Missouri |
| I-270 | Colorado - Illinois-Missouri - Maryland - Ohio |
| I-370 | Maryland |
| I-470 | Kansas - Missouri - Ohio-West Virginia |
| I-670 | Ohio - Kansas-Missouri |
| past/ future |
I-170: Maryland |
 |
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