 State Route 170 | ||||
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| Route information | ||||
| Maintained by ODOT | ||||
| Length | 36.64 mi[1] (58.97 km) | |||
| Existed | 1924–present | |||
| Major junctions | ||||
| South end |    US 30 / SR 7 / SR 11 near Calcutta | |||
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| North end |  US 62 in Youngstown | |||
| Location | ||||
| Country | United States | |||
| State | Ohio | |||
| Counties | Columbiana, Mahoning | |||
| Highway system | ||||
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State Route 170 (SR 170) is a north–south running state route located in Mahoning and Columbiana counties in northeast Ohio. It runs within a few miles of the Pennsylvania border for much of its route as it passes through the eastern parts of the two counties. The southern terminus is at an interchange with U.S. 30, State Route 7, and State Route 11 near Calcutta, and the northern at U.S. 62 in Youngstown. ODOT extended the northern terminus from the previous point of Interstate 680, changing signs on July 16 and 17, 2008.[2]
- ^ Ohio Department of Transportation. "Technical Services Straight Line Diagrams". Retrieved April 30, 2010.
- ^ "Sign work, I-680 restrictions to be done today". The Vindicator. 2008-07-17. Retrieved 2009-05-12.