Ohio State Route 170

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State Route 170 marker

State Route 170
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
  I‑680 in Youngstown
North end: US 62 in Youngstown
Location
Counties: Columbiana, Mahoning
Highway system
SR 169 SR 171
Intersection with State Route 154 in Negley

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 though 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]

History[edit]

1924[edit]

Original state highway.[3]

1924[edit]

Originally routed from East Palestine to Petersburg.[3]

1931[edit]

Extended to East Liverpool along previous unnumbered road.[3]

1962[edit]

Extended to 1-mile (1.6 km) north of North Kingsville along previous route 90.[3]

1970[edit]

Truncated at 3 miles (4.8 km) north of Poland.[3]

2008[edit]

Extended 3 miles (4.8 km) to U.S. 62 in Youngstown along the former Route 625.[2][4]

Major junctions[edit]

County Location Mile km Destinations Notes
Columbiana St. Clair Township 0.00 0.00 US 30 / SR 7 / SR 11 / Substation Road Interchange
Middleton Township 11.18 17.99 SR 154 east – Beaver Falls, PA Southern end of SR 154 concurrency
11.24 18.09 SR 154 west – Lisbon Northern end of SR 154 concurrency
East Palestine 14.57 23.45 SR 46 north / SR 558 west (Main Street) Southern terminus of SR 46; eastern terminus of SR 558
14.82 23.85 SR 165 east (Taggart Street) Southern end of SR 165 concurrency
Unity Township 16.70 26.88 SR 14 east / North Market Street Southern end of SR 14 concurrency
17.24 27.75 SR 14 west / SR 165 / Brookdale Avenue – Columbiana Northern end of SR 14 / SR 165 concurrency
Mahoning Petersburg 21.23 34.17 SR 617 west (Garfield Road) Southern end of SR 617 concurrency
21.32 34.31 SR 617 east (Youngstown-Pittsburgh Road) / CR 8 (East Garfield Road) Northern end of SR 617 concurrency
New Middletown 26.04 41.91 SR 630 east / CR 30 (East Calla Road) Western terminus of SR 630
Poland 30.33 48.81 SR 616 north (Water Street) Southern terminus of SR 630
30.39 48.91 US 224 (Center Road)
Youngstown 33.55 53.99 I‑680 – Youngstown, Pittsburgh Exit 9 (I-680)
35.33 56.86 SR 7 (Market Street)
36.64 58.97 US 62 (Canfield Road / Glenwood Avenue)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]