Ohio State Route 170

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
Ohio Highways Interstate U.S. State Scenic ← 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

1924

Original state highway.^[3]

1924

Originally routed from East Palestine to Petersburg.^[3]

1931

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

1962

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

1970

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

2008

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

Major junctions

County	Location	mi	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       Concurrency terminus

References