{{Short description|State highway in northwestern Ohio, US}} {{Use American English|date=May 2025}} {{Use mdy dates|date=January 2025}} {{Infobox road |state=OH |type=SR |route=231 |map=OH 231 map.svg |maint=ODOT |length_mi=35.77 |length_round=2 |length_ref=<ref name="SLD_231MAR">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/marsr0231r.pdf |title=Technical Services Straight Line Diagrams: SR 231, Marion County |author=Ohio Department of Transportation |author-link=Ohio Department of Transportation |access-date=2006-11-12 |archive-url=https://web.archive.org/web/20120311061258/http://www.odotonline.org/techservapps/SLD/pdf_files/marsr0231r.pdf |archive-date=2012-03-11 |url-status=dead }}</ref><ref name="SLD_231WYA">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/wyasr0231r.pdf |title=Technical Services Straight Line Diagrams: SR 231, Wyandot County |author=Ohio Department of Transportation |access-date=2006-11-12 |archive-url=https://web.archive.org/web/20120325235246/http://www.odotonline.org/techservapps/SLD/pdf_files/wyasr0231r.pdf |archive-date=2012-03-25 |url-status=dead }}</ref><ref name="SLD_231SEN">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/sensr0231r.pdf |title=Technical Services Straight Line Diagrams: SR 231, Seneca County |author=Ohio Department of Transportation |access-date=2006-11-12 |archive-url=https://web.archive.org/web/20120325235251/http://www.odotonline.org/techservapps/SLD/pdf_files/sensr0231r.pdf |archive-date=2012-03-25 |url-status=dead }}</ref> |established=1923<ref name=ODOT1922_map /><ref name=ODOT1923_map /> |direction_a=South |terminus_a=CSX grade crossing in Morral |junction={{plainlist| *{{jct|state=OH|US|23}} near Morral *{{jct|state=OH|US|30}} near Nevada *{{jct|state=OH|US|224}} in Tiffin }} |direction_b=North |terminus_b={{jct|state=OH|OH|18|OH|100|OH|101}} in Tiffin |counties=Marion, Wyandot, Seneca |previous_type=OH 1967 |previous_route=230 |previous_dab=1962-1971 |next_type=SR |next_route=232 }} [[File:Neff Street elevator.jpg|thumb|right|250px|Grain elevator at the southern terminus in Morral.]] [[Image:Nevada Ohio.JPG|thumb|right|250px|SR 231 (North Main Street) in downtown Nevada looking south near the CFE(Chicago, Fort Wayne, and Eastern.]]
'''State Route 231''' ('''SR 231''') is a {{convert|35.77|mi|km|adj=on}} long north–south state highway in the northwestern quadrant of the U.S. state of Ohio. SR 231 has its southern terminus at a CSX railroad crossing in the village of Morral. Its northern terminus is in downtown Tiffin at a signalized intersection with SR 18 and SR 101, following a {{convert|0.35|mi|km}} long concurrency with SR 100, which continues north as a solo route north of this point.
==Route description== The path of SR 231 takes it through northern Marion County, eastern Wyandot County and southern Seneca County. There are no segments of SR 231 that are included within the National Highway System (NHS). The NHS is a network of highways identified as being most important for the economy, mobility and defense of the nation.<ref name="NHS">{{cite map | title=National Highway System: Ohio | date=December 2003 | publisher=Federal Highway Administration | url=http://www.fhwa.dot.gov/planning/nhs/maps/oh/oh_Ohio.pdf | archive-url=https://web.archive.org/web/20081016165827/http://www.fhwa.dot.gov/planning/nhs/maps/oh/oh_Ohio.pdf | url-status=dead | archive-date=October 16, 2008 | format=PDF|access-date=2011-05-07}}</ref>
{{Expand section|date=May 2011}}
==History== SR 231 was applied in 1923. The highway was originally a short connector route in the Nevada vicinity, running between the former SR 182, now County Road 182, CR 182, in Nevada and the old two-lane alignment of U.S. Route 30 (US 30), now designated as CR 330, north of the village.<ref name=ODOT1922_map>{{cite map |title=Map of Ohio State Highways |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1922a.sid |format=MrSID |publisher=Ohio Department of Highways and Public Works |date=April 1922 |cartography=ODHPW |access-date=2011-05-13}}</ref><ref name=ODOT1923_map>{{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 Department of Highways and Public Works |date=July 1923 |cartography=ODHPW |access-date=2011-05-13}}</ref>
In 1932, SR 231 was extended south along the routing that it presently utilizes south of Nevada to its current southern terminus in Morral.<ref name=ODOT1931_map>{{cite map |title=Map of Ohio Showing State Highway System |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1931a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1931 |cartography=ODOH |access-date=2011-05-13}}</ref><ref name=ODOT1932_map>{{cite map |title=Map of Ohio Showing State Highway System |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1932a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1932 |cartography=ODOH |access-date=2011-05-13}}</ref> Five years after being extended on the south ended, SR 231 was lengthened on the north end, following its present alignment along a previously county-maintained roadway to a new northern terminus at its present eastern junction with SR 103 east of Sycamore.<ref name=ODOT1936_map>{{cite map |title=Official Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1936a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1936 |cartography=ODOH |access-date=2011-05-13}}</ref><ref name=ODOT1937_map>{{cite map |title=Official Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1937a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1937 |cartography=ODOH |access-date=2011-05-13}}</ref> Then, in 1939, SR 231 was extended to the north one more time, via a concurrency with SR 103 and SR 67 and then along a previously unnumbered roadway to its present northern terminus in Tiffin.<ref name=ODOT1938_map>{{cite map |title=Official Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1938a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1938 |cartography=ODOH |access-date=2011-05-13}}</ref><ref name=ODOT1939_map>{{cite map |title=Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1939a.sid |format=MrSID |publisher=Ohio Department of Highways |date=1939 |cartography=ODOH |access-date=2011-05-13}}</ref>
==Major intersections== {{OHinttop|length_ref=<ref name="SLD_231MAR"/><ref name="SLD_231WYA"/><ref name="SLD_231SEN"/>}} {{OHint |county=Marion |cspan=3 |location=Morral |mile=0.00 |road=CSX railroad crossing |notes=Morral–Kirkpatrick Road continues west}} {{OHint |ctdab=Marion |location=Grand Prairie Township |lspan=2 |mile=3.13 |road={{jct|state=OH|OH|423|dir1=South|city1=Marion|name1=Marion-Upper Sandusky Road}} |notes=Northern terminus of SR 423}} {{OHint |mile=3.43 |road={{jct|state=OH|US|23|city1=Marion|city2=Upper Sandusky}} |notes=Interchange}} {{OHint |county=Wyandot |cspan=6 |ctdab=Wyandot |location=Marseilles Township |lspan=2 |mile=5.67 |type=concur |road={{jct|state=OH|OH|294|dir1=East}} |notes=Southern end of SR 294 concurrency }} {{OHint |mile=7.38 |type=concur |road={{jct|state=OH|OH|294|dir1=West}} |notes=Northern end of SR 294 concurrency }} {{OHint |location=Nevada |mile=12.33 |road={{jct|state=OH|US|30|city1=Mansfield|city2=Upper Sandusky|city3=Van Wert}} |notes=Interchange}} {{OHint |ctdab=Wyandot |location=Sycamore Township |mile=22.24 |type=concur |road={{jct|state=OH|OH|103|dir1=East|city1=Chatfield|road|T-148}} |notes=Southern end of SR 103 concurrency}} {{OHint |location=Sycamore |lspan=2 |mile=24.26 |type=concur |road={{jct|state=OH|OH|67|dir1=West|OH|103|dir2=West|name2=West Saffell Avenue|road|South Sycamore Avenue}} |notes=Northern end of SR 103 concurrency; southern end of SR 67 concurrency}} {{OHint |mile=24.92 |type=concur |road={{jct|state=OH|OH|67|dir1=East}} |notes=Northern end of SR 67 concurrency}} {{OHint |county=Seneca |cspan=3 |location=Tiffin |lspan=3 |mile=33.81 |road={{jct|state=OH|US|224|city1=Attica|city2=Findlay}} |notes=}} {{OHint |mile=35.42 |type=concur |road={{jct|state=OH|OH|100|dir1=South|name1=Melmore Street|road|Sycamore Street}} |notes=Southern end of SR 100 concurrency}} {{OHint |mile=35.77 |type=concur |road={{jct|state=OH|OH|18|SR|101|SR|100|dir1=east|dir2=east|dir3=north|name2=East Market Street|name3=Washington Street}} |notes=Northern end of SR 100 concurrency}} {{OHintbtm|keys=concur}}
==See also== {{Portal|Ohio|U.S. Roads}} {{Clear}}
==References== {{Reflist}}
==External links== {{Attached KML|display=title,inline}} *{{Commons category-inline}}
231 231 231 231