Interstate 170
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| Inner Belt Expressway | ||||
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| Route information | ||||
| Maintained by MoDOT | ||||
| Length: | 11.17 mi[1] (17.98 km) | |||
| Existed: | 1956 – present | |||
| Major junctions | ||||
| South end: |   I-64 / US 40 in Richmond Heights |
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 I-70 in Berkeley |
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| North end: |  I-270 in Hazelwood |
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| Location | ||||
| Counties: | St. Louis County | |||
| Highway system | ||||
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Auxiliary route of the Interstate Highway System Missouri Highways
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→Interstate 170 (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 (17.98 km) 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.
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[edit] History
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;[2] however, the portion of the route south of I-64/US 40 was canceled due to local opposition. The portion of MetroLink's Cross County Extension south of I-64 runs roughly along the proposed alignment.[3]
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 725.
[edit] Recent
The southern two interchanges on I-170 (at I-64/US 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 Galleria Parkway from northbound I-170 was eliminated. Eager Rd access to and from I-170 was also revised in the New I-64 project.[4]
[edit] Exit list
The entire route is in St. Louis County.
| Location | Mile[5] | Exit | Destinations | Notes |
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| Richmond Heights | 0.00 | 1 | I-64 / US 40 – Wentzville, St. Louis |
Signed as exits 1A (east) and 1B (west) |
| 1C | Eager Road, Brentwood Boulevard north | Southbound exit and northbound entrance | ||
| Clayton | 0.84 | 1D | Brentwood Boulevard south | No northbound exit |
| 1.12 | 1E | Forest Park Parkway | ||
| Ladue | 1.55 | 1F | Ladue Road | |
| University City | 2.22 | 2 | Delmar Boulevard | |
| Olivetter | 3.39 | 3 |  Route 340 (Olive Boulevard) |
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| Overland | 4.15 | 4 |  Route D (Page Avenue) |
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| St. John | 5.65 | 5 |  Route 180 (St. Charles Rock Road) |
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| Bel-Ridge | 6.61 | 6 |  Route 115 (Natural Bridge Road) |
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| Berkeley | 7.43 | 7 | I-70 – St. Louis, Kansas City |
Signed as exit 7A (east) and 7B (west) |
| 7.68 | 7C |  Lambert-St. Louis Airport |
Southbound exit is via exit 7B | |
| 8.42 | 8 | Scudder Road, North Hanley Road | ||
| 8.83 | 9A | Airport Road | ||
| 9.08 | 9B | Boeing | Northbound exit and southbound entrance only | |
| 9.61 | 9C | North Hanley Road | Northbound exit and southbound entrance only | |
| Hazelwood | 10.58 | 10 | I-270 – Kansas City, Chicago |
Signed as exits 10A (west) and 10B (east) |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus • Closed/former • Incomplete access • Unopened |
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[edit] References
- ^ "Route Log and Finder List - Interstate System - table 2". Federal Highway Administration. 2002-10-31. http://www.fhwa.dot.gov/reports/routefinder/table2.cfm. Retrieved 2007-07-08.
- ^ Sutin, Phil; Hopgood, Mei-Ling (1997-01-09). "Hundreds of Homes Face Razing for New Highway". St. Louis Post-Dispatch.
- ^ Sutin, Phil (1997-03-14). "Westfall Sours On Extension of Interstate 170". St. Louis Post-Dispatch.
- ^ "Project Overview". The New I-64. Missouri Department of Transportation. Archived from the original on 2007-05-04. http://web.archive.org/web/20070504060100/http://www.thenewi64.org/ProjectOverview.do. Retrieved 2007-05-28.
- ^ DeLorme Street Atlas USA 2007, Toggle Measure Tool
[edit] External links
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