Route 4
From route 42 in Cincinnati to route 6 in Sandusky.
Counties:
Hamilton, Butler, Montgomery, Greene, Clark, Champaign, Union, Delaware,
Marion, Crawford, Seneca, Huron, Erie
Length:
213 miles
General Direction:
North/South
Dual Certifications:
Supercedes route 73 from Excello to 2 miles north of Middletown.
Superceded by route 70 from 11 miles north of Dayton to Enon.
Superceded by route 36 from 2 miles north of Irwin to Marysville.
Freeway Sections:
From route 201 to route 444.
From route 235 south to route 68.
Marysville bypass.
Four-Lane Divided Highway Sections:
From Springdale to 3 miles south of Hamilton.
From Hamilton to Excello.
History of route 4:
Original state highway.
Originally routed along current route 23 from Portsmouth to Waldo and
along current route 423 from Waldo to Marion.
Portsmouth to Marion certified as route 23 in 1926.
In 1926, routing south of Marion changed to more or less the current
routing.
Cincinnati to Middletown was route 6 before 1926.
Middletown to 2 miles north of Irwin was route 52 before 1926.
Marysville to Marion was route 38 before 1926.
Dayton to Springfield upgraded and rerouted by 1959, including
upgrading route 69N (now route 235N) to route 68 to freeway.
6 miles south of Fairborn to current route 70 (route 40 in 1959)
certified as route 444 in 1959.
Route 201 to route 444 upgraded to freeway in 1967.