Ohio State Route 46

State Route 46
Route information
Maintained by ODOT
Length:	83.61 mi[1] (134.56 km)
Existed:	1924 – present
Major junctions
South end:	SR 170 in East Palestine
	I-80 in Austintown
North end:	SR 11 in Plymouth Township
Location
Counties:	Columbiana, Mahoning, Trumbull, Ashtabula
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 45 SR 47 →

State Route 46 is a north–south state highway in the northeastern portion of the U.S. state of Ohio. Its southern terminus is at State Route 170 in East Palestine (this point is also the eastern terminus of State Route 558), and its northern terminus is at State Route 11 several miles south of State Route 531 in Ashtabula. In its northernmost portion, from south of Ashtabula to Cortland, Route 46 is a 2-lane highway while running parallel within a few miles to limited-access State Route 11 to the east.

History

• 1923 – Original route established^[2]; originally routed from Canfield to the former State Route 2 (current U.S. Route 20) in Ashtabula^[3].
• 1931 – Extended to Columbiana along a previously unnumbered road^[3].
• 1938 – Extended to State Route 531 in Ashtabula along a previously unnumbered road^[3].
• 1946 – Extended to East Palestine along its current route and State Route 558^[3].
• 1947 – From 1-mile (1.6 km) south of New Waterford to East Palestine dually certified with State Route 558^[3].
• 1950 – Truncated at 1-mile (1.6 km) south of New Waterford^[3] (ODOT’s diagram shows this dual certification is still in place).
• 1956 – Columbiana to Canfield dually certified with State Route 14^[3].
• 1959 – State Route 14 certification removed from Canfield to 2 miles (3.2 km) south of Canfield^[3].
• 1970 – From 1-mile (1.6 km) south of Interstate 90 to Ashtabula rerouted along new freeway alignment and dually certified with State Route 11^[3].
• 1984 – State Route 14 certification removed from Columbiana to 2 miles (3.2 km) south of Canfield^[3].
• 2007-08-17 - Removed from State Route 11, truncated at State Route 11 interchange in Plymouth Township^[4].

Major intersections

County	Location	Mile	Destinations	Notes
Columbiana	East Palestine	0.00	SR 170 SR 558	SR 558 ends (eastern terminus) concurrent with SR 46.
	Unity Township	3.18	SR 558	SR 558 joins from the west.
	Fairfield Township	6.86	SR 7	SR 7 joins from the south.
	Columbiana	8.38	SR 7 SR 14	SR 7 leaves to the north; SR 46 joins SR 14 to the west; SR 14 leaves to the east.
		9.40	East Park Avenue	Former routing of SR 46
		11.19	SR 14	SR 14 joins from the west (County Line Road).
Mahoning	Beaver Township	13.52	SR 11	Interchange
		14.82	SR 165	W. South Range Road
	Canfield Township	19.83	SR 446	SR 446 ends to the west (eastern terminus, and former SR 14 alignment).
	Canfield	20.58	US 62	US 62 joins from the west (Lisbon Street).
		20.67	US 224	Main Street
	Canfield Township	22.02	US 62	US 62 leaves to the east (Shields Road).
	Austintown	26.03	Mahoning Avenue	Formerly part of SR 18
		27.54	I-80	I-80 Exit 223 - Niles
Trumbull	Niles	31.71	SR 169	SR 169 joins from the north (Main Street).
		31.99	SR 169	SR 169 leaves to the east (Robbins Avenue).
		33.88	US 422	Youngstown-Warren Road.
	Howland	35.60	SR 82	Interchange
		36.15	East Market Street	Former routing of SR 82
	Cortland	41.07	SR 305	Wilson-Sharpsville Road.
		41.73	SR 5	SR 5 joins from the southwest (Elm Road).
		41.87	SR 5	SR 5 leaves to the northeast (High Street); former alignment of SR 5 ends to the southwest (Warren-Meadville Road).
	Mecca Township	46.79	SR 88	Traffic circle at Greenville Road NE
	Greene Township	51.97	SR 87	Kinsman Road NE
Ashtabula	Colebrook Township	57.18	US 322
	New Lyme Township	62.11	US 6
	Jefferson	71.00	SR 307	SR 307 leaves to the east (Mulberry Street).
		71.61	East Beech Street	Former western terminus of SR 167
		72.12	SR 307 SR 167	SR 307 joins from the west; SR 167 begins to the east (western terminus).
	Plymouth Township	75.93	Jefferson Road	Former routing of SR 46
		76.56	SR 11	North end SR 46; formerly joined SR 11
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

1. ^ Mileages retrieved from Technical Services Straight Line Diagrams unless otherwise noted.
2. ^ Explanation of the Ohio State Highway System (The Unofficial Ohio State Highways Web Site) by John Simpson
3. ^ ^{a b c d e f g h i j} Route 46 (The Unofficial Ohio State Highways Web Site) by John Simpson
4. ^ "Straight-Line Diagrams County Update Table (Ashtabula, 2008)". Ohio Department of Transportation.