Ohio State Route 46 Explained

State:	OH
Type:	SR
Route:	46
Map:	OH 46 map.svg
Map Notes:	Route of SR 46 highlighted in red
Maint:	ODOT
Length Mi:	76.66
Length Round:	2
Length Ref:	^[1]
Established:	1924
Direction A:	South
Terminus A:	in East Palestine
Junction:	near Columbiana near Columbiana in Canfield in Austintown near Niles in Colebrook in New Lyme
Direction B:	North
Terminus B:	in Plymouth Township
Counties:	Columbiana, Mahoning, Trumbull, Ashtabula
Previous Type:	SR
Previous Route:	45
Next Type:	SR
Next Route:	47

State Route 46 (SR 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 Plymouth Township. 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 1miles south of New Waterford to East Palestine dually certified with State Route 558.^[3]
1950 – Truncated at 1miles 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 2miles south of Canfield.^[3]
1970 – From 1miles 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 2miles south of Canfield.^[3]
2007-08-17 - Removed from State Route 11, truncated at State Route 11 interchange in Plymouth Township.^[4]