{{Short description|State highway in northeastern Ohio, US}} {{Use American English|date=April 2025}} {{Use mdy dates|date=January 2025}} {{Infobox road |state=OH |type=SR |route=306 |map=OH 306 map.svg |maint=ODOT |length_mi=27.42 |length_round=2 |length_ref=<ref name=sld>{{cite web |url=http://www.dot.state.oh.us/Divisions/Planning/TechServ/TIM/Pages/Straight-Line-Diagrams.aspx |title=Technical Services Straight Line Diagrams |author=Ohio Department of Transportation |author-link=Ohio Department of Transportation }}</ref> |established=1932 |direction_a=South |terminus_a={{jct|state=OH|SR|43}} in Aurora |junction= *{{jct|state=OH|US|422}} in Bainbridge Township *{{jct|state=OH|US|322}} in Chester Township *{{jct|state=OH|US|6}} in Kirtland *{{jct|state=OH|I|90}} in Willoughby *{{jct|state=OH|US|20}} in Mentor |direction_b=North |terminus_b={{jct|state=OH|SR|283}} in Mentor |counties=Portage, Geauga, Lake |previous_type=SR |previous_route=305 |next_type=SR |next_route=307 }}
'''State Route 306''' ('''SR 306''') is a north–south state highway in northeastern Ohio, running from its southern terminus at SR 43 in Aurora to its northern terminus at SR 283 in Mentor. Most of the road from Aurora north to Kirtland is part of the former Chillicothe Turnpike and is known as Chillicothe Road. The Kirtland Temple, the first temple built by the Latter Day Saint movement (Mormons), is located on SR 306 in central Kirtland.<ref>{{google maps |url=https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Kirtland+Temple&sll=37.0625,-95.677068&sspn=31.371289,42.363281&ie=UTF8&ll=41.625372,-81.362407&spn=0.006833,0.010343&z=16 |title= Kirtland Temple |accessdate=28 February 2009}}</ref>
==History== SR 306 was first designated in 1932 following its current route between US 322 and SR 283.<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 |year=1931 |cartography=O.W. Merrell, Director |access-date=August 19, 2013}}</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=ODOH |year=1932 |cartography=O.W. Merrell, Director |access-date=August 19, 2013}}</ref> In 1935, the Aurora-US 422 segment was brought into the state highway system, but as '''SR 382'''.<ref name=ODOT1935_map>{{cite map |title=Official 1935 Ohio Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1935a.sid |format=MrSID |publisher=ODOH |year=1935 |cartography=John Jaster, Jr., Director |access-date=August 19, 2013}}</ref> By 1937, the two routes were united as SR 306; also at this time, the road connecting Aurora and Hudson was included as the southernmost segment of SR 306.<ref name=ODOT1936_map>{{cite map |title=1936 Official Highway Map |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1936a.sid |format=MrSID |publisher=ODOH |year=1936 |cartography=John Jaster, Jr., Director |access-date=August 19, 2013}}</ref><ref name=ODOT1937_map>{{cite map |title=Official Ohio Highway Map 1937 |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1937a.sid |format=MrSID |publisher=ODOH |year=1937 |cartography=John Jaster, Jr., Director |access-date=August 19, 2013}}</ref> In 1942, the Hudson-Aurora segment was removed from the state highway system, but by this time, the entire route had been paved.<ref name=ODOT1941_map>{{cite map |title=Ohio Highway Map 1941 |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1941a.sid |format=MrSID |publisher=ODOH |year=1941 |cartography=H.G. Sours, Director |access-date=August 19, 2013}}</ref><ref name=ODOT1942_map>{{cite map |title=Ohio Highway Map 1942 |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1942a.sid |format=MrSID |publisher=ODOH |year=1942 |cartography=H.G. Sours, Director |access-date=August 19, 2013}}</ref> No major changes have occurred to the routing since that time.
==Major junctions== thumb|right|SR 306 at its northern terminus with SR 283 in Mentor.
{{jcttop|length_ref=<ref name=sld/>}} {{OHint |county=Portage |cspan=2 |location=Aurora |lspan=2 |mile=0.00 |road={{jct|state=OH|SR|43|name1=Aurora Road / Chillicothe Road|city1=Streetsboro}} }} {{OHint |mile=0.28 |road={{jct|state=OH|SR|82|name1=Garfield Road}} }} {{OHint |county=Geauga |cspan=3 |township=Bainbridge |ctdab=Geauga |mile=5.25 |road={{jct|state=OH|US|422|city1=Warren|location2=Cleveland}} |notes=Interchange }} {{OHint |township=Russell |ctdab=Geauga |mile=10.45 |road={{jct|state=OH|SR|87|name1=Kinsman Road}} }} {{OHint |township=Chester |ctdab=Geauga |mile=14.49 |road={{jct|state=OH|US|322|name1=Mayfield Road|city1=Orwell|location2=Cleveland}} }} {{OHint |county=Lake |cspan=7 |location=Kirtland |lspan=2 |mile=18.93 |road={{jct|state=OH|US|6}} }} {{OHint |mile=22.11 |road={{jct|state=OH|SR|615|name1=Chillicothe Road|dir1=north|road|Eisenhower Drive}} |notes=Southern terminus of SR 615 }} {{OHint |location=Willoughby |mile=23.20 |road={{jct|state=OH|I|90|location1=Erie, PA|location2=Cleveland}} |notes=Exit 193 (I-90) }} {{OHint |location=Mentor |lspan=4 |mile=23.51 |road={{jct|state=OH|SR|84|name1=Johnnycake Ridge Road}} }} {{OHint |mile=24.11 |road={{jct|state=OH|US|20|name1=Mentor Avenue}} }} {{OHint |mile=24.87 |road={{jct|state=OH|SR|2|city1=Painesville|location2=Cleveland}} |notes=Interchange }} {{OHint |mile=27.42 |road={{jct|state=OH|SR|283|Tour|LECT|name2=Lake Shore Boulevard|road|Reynolds Road}} }} {{jctbtm}}
==References== {{Reflist}}
==External links== {{Attached KML|display=title,inline}} *[https://web.archive.org/web/20070930041000/http://www.state-ends.com/ohio/oh306/ State Route 306 Endpoint Photos]
306 Category:Transportation in Geauga County, Ohio Category:Transportation in Portage County, Ohio Category:Transportation in Lake County, Ohio