Ohio State Route 122

State Route 122 (SR 122) is an Ohio state highway which runs from the Ohio-Indiana state line in Preble County east of Eaton, Ohio to SR 48 near Lebanon, Ohio, a distance of 43.4 miles (69.8 km). When the route was designated in 1923, it ran along its current route from Indiana to Middletown.^[2][3] It was extended to its current eastern terminus in 1937 but was extended further east to U.S. Route 42 in 1946.^[4][5] The route was truncated back to SR 48 by 1985 with the former section being renamed "Old State Route 122" and maintained by Warren County as CR 230.^[6][7][8] The route also used to continue west of the Indiana state line as Indiana State Road 122 west to its terminus at US 27 east of Abington, Indiana.

State Route 122
Route information
Maintained by ODOT
Length	43.26 mi[1] (69.62 km)
Existed	1923–present
Major junctions
West end	Indiana state line at Old SR 122
Major intersections	US 35 in Eaton US 127 in Eaton I-75 in Middletown
East end	SR 48/Warren CR 230 near Lebanon, Ohio
Location
Country	United States
State	Ohio
Counties	Preble, Butler, Warren
Highway system
Ohio State Highway System Interstate US State Scenic
← SR 121 → SR 123

State Route 122 in Red Lion, Ohio.

Major intersections

County	Location	mi[1]	km	Destinations	Notes
Preble	Dixon–Jackson township line	0.00	0.00	Old SR 122 / Stateline Road	Indiana state line
	Eaton	9.20	14.81	US 35 west (Eaton Richmond Pike) – [[, Ohio|]]	Western end of US 35 concurrency
		9.46	15.22	US 127 / SR 732 south (Barron Street) to I-70
		9.70	15.61	US 35 east (East Main Street)	Eastern end of US 35 concurrency
	Gratis	18.43	29.66	SR 503 (Ada Doty Street)
		18.55	29.85	SR 725 (South Street)
Butler	Madison Township	26.84	43.19	SR 744 west – Jacksonburg	Eastern terminus of SR 744
	Middletown	31.42	50.57	SR 4 south / SR 73 west (Verity Parkway / Canal Street)	One-way pair
		31.48	50.66	SR 4 / SR 73 (Verity Parkway / Clinton Street)	Southern end of SR 4 northbound / SR 73 eastbound concurrency
		31.54	50.76	SR 4 north / SR 73 east (Verity Parkway / Clinton Street) / First Avenue	Northern end of SR 4 northbound / SR 73 eastbound concurrency
Warren		36.54– 36.75	58.81– 59.14	I-75 – Cincinnati, Dayton	Exit 32 (I-75)
	Clearcreek Township	40.50	65.18	SR 123 north – Franklin	Western end of SR 123 concurrency
		40.62	65.37	SR 741 – Mason, Springboro
		40.86	65.76	SR 123 south – Lebanon	Eastern end of SR 123 concurrency
		43.26	69.62	SR 48 / CR 230 (Old SR 122) – Dodds
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Westbound directional alternate

The entire route is in Middletown, Butler County.

mi[1]	km	Destinations	Notes
0.00	0.00	SR 122 south (University Boulevard) / First Avenue
0.29– 0.63	0.47– 1.01	University Boulevard / Reinartz Boulevard / Miami Avenue	Interchange
1.23	1.98	SR 4 / SR 73 (Verity Parkway)
2.11	3.40	SR 122 (Carmody Boulevard) / Central Avenue
1.000 mi = 1.609 km; 1.000 km = 0.621 mi