Ohio State Route 122

{{Short description|State highway in Ohio, US}}

{{Use American English|date=May 2025}}

{{Use mdy dates|date=January 2025}}

{{Infobox road

|state=OH

|type=SR

|route=122

|map=OH 122 map.svg

|length_mi=43.26

|length_round=2

|length_ref={{cite web |url=http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Pages/DESTAPE.aspx |title=DESTAPE |publisher=Ohio Department of Transportation |date=July 3, 2014 |access-date=September 8, 2014}}

• [http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Documents/DESTAPECnty/DESPRE.pdf Preble County]
• [http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Documents/DESTAPECnty/DESBUT.pdf Butler County]
• [http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Documents/DESTAPECnty/DESWAR.pdf Warren County]

|established=1923

|direction_a=West

|terminus_a=Indiana state line at Old SR 122

|junction=

• {{jct|state=OH|US|35}} in Eaton
• {{jct|state=OH|US|127}} in Eaton
• {{jct|state=OH|I|75}} in Middletown

|direction_b=East

|terminus_b={{jct|state=OH|SR|48}}/Warren CR 230 near Lebanon, Ohio

|counties=Preble, Butler, Warren

|previous_type=SR

|previous_route=121

|next_type=SR

|next_route=123

}}

File:State Route 122 Red Lion OH USA.JPG.]]

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 {{convert|43.4|mi|km}}. When the route was designated in 1923, it ran along its current route from Indiana to Middletown.{{cite map |title=Map of Ohio Showing State Routes |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1923a.sid |format=MrSID |publisher=Ohio Division of Highways |year=1923 |cartography=L.A. Boulay, Director |access-date=August 18, 2013}}{{cite map |title=Map of Ohio Showing State Routes |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1924a.sid |format=MrSID |publisher=ODOH |year=1924 |cartography=L.A. Boulay, Director |access-date=August 18, 2013}} It was extended to its current eastern terminus in 1937 but was extended further east to U.S. Route 42 in 1946.{{cite map |title=Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1945a.sid |format=MrSID |publisher=ODOH |year=1945 |cartography=Perry T. Ford, Director |access-date=August 19, 2013}}{{cite map |title=Ohio Highway Map 1946 |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1946a.sid |format=MrSID |publisher=ODOH |year=1946 |cartography=Perry T. Ford, Director |access-date=September 23, 2013}} 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.{{cite map |title=Official Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1983a.sid |format=MrSID |publisher=ODOT |year=1983 |cartography=ODOT |access-date=September 22, 2013}}{{cite map |title=Official Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1985a.sid |format=MrSID |publisher=ODOT |year=1985 |cartography=ODOT |access-date=September 22, 2013}}{{cite map |url=http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Documents/CountyMaps_ColorOn/WAR_color.pdf |title=Warren County, Ohio |publisher=ODOT |date=June 2012 |access-date=September 8, 2014}} 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.