{{Short description|State highway in southern Ohio, US}} {{Use American English|date=May 2025}} {{Use mdy dates|date=January 2025}} {{Infobox road |state=OH |type=SR |route=180 |map=OH 180 map.svg |maint=ODOT |length_mi=29.55 |length_round=2 |length_ref=<ref name="SLD_180ROS">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/rossr0180r.pdf |title=Technical Services Straight Line Diagrams: SR 180, Ross County |author=Ohio Department of Transportation |accessdate=2011-06-02 |author-link=Ohio Department of Transportation |archive-url=https://web.archive.org/web/20120325235845/http://www.odotonline.org/techservapps/SLD/pdf_files/rossr0180r.pdf |archive-date=2012-03-25 |url-status=dead }}</ref><ref name="SLD_180PIC">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/picsr0180r.pdf |title=Technical Services Straight Line Diagrams: SR 180, Pickaway County |author=Ohio Department of Transportation |accessdate=2011-06-02 |archive-url=https://web.archive.org/web/20120325235851/http://www.odotonline.org/techservapps/SLD/pdf_files/picsr0180r.pdf |archive-date=2012-03-25 |url-status=dead }}</ref><ref name="SLD_180HOC">{{cite web |url=http://www.odotonline.org/techservapps/SLD/pdf_files/hocsr0180r.pdf |title=Technical Services Straight Line Diagrams: SR 180, Hocking County |author=Ohio Department of Transportation |accessdate=2011-06-02 |archive-url=https://web.archive.org/web/20120325235855/http://www.odotonline.org/techservapps/SLD/pdf_files/hocsr0180r.pdf |archive-date=2012-03-25 |url-status=dead }}</ref> |established=1927<ref name=ODOT1926_map /><ref name=ODOT1927_map /> |direction_a=West |terminus_a={{jct|state=OH|OH|159}} near Chillicothe |junction= |direction_b=East |terminus_b={{jct|state=OH|US|33|CR|33A|county2=Hocking}} near Logan |counties=Ross, Pickaway, Hocking |previous_type=SR |previous_route=179 |next_type=SR |next_route=181 }} [[Image:Ohio State Route 180.jpg|thumb|right|250px|View along State Route 180 northeast of Chillicothe]]
'''State Route 180''' ('''SR 180''') is a {{convert|29.55|mi|km|adj=on}} long east–west state highway in the southern portion of the U.S. state of Ohio. SR 180 has its western terminus at a Roundabout with SR 159 nearly {{convert|5|mi|km}} northeast of Chillicothe. Its eastern terminus is at a diamond interchange with the U.S. Route 33 (US 33) expressway approximately {{convert|3.75|mi|km}} northwest of Logan.
==Route description== Along its path, SR 180 travels through northeastern Ross County, the extreme southeastern corner of Pickaway County and the northwestern part of Hocking County. No portion of this highway is included within the National Highway System (NHS). The NHS is a network of routes determined to be 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|accessdate=2011-06-01}}</ref>
{{Expand section|date=June 2011}}
==History== The SR 180 designation was applied in 1927. Prior to this time, the stretch of highway that SR 180 currently occupies through Ross, Pickaway and Hocking Counties was designated as SR 27. With the designation of the US 27 in that year, SR 27 was replaced by SR 180. The only change related to SR 180 since its inception has been the highway that it meets at its eastern terminus, which at the time was the predecessor to US 33, SR 31.<ref name=ODOT1926_map>{{cite map |title=Map of Ohio Showing State Routes |url=http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1926a.sid |format=MrSID |publisher=Ohio Department of Highways and Public Works |date=August 1926 |cartography=ODHPW |accessdate=2011-06-01}}</ref><ref name=ODOT1927_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/otm1927a.sid |format=MrSID |publisher=Ohio Department of Highways and Public Works |date=June 1927 |cartography=ODHPW |accessdate=2011-06-01}}</ref>
Construction began in October 2019 on SR 180 western terminus with SR 159. The project redesigns the intersection with a roundabout. Originally, an extension of SR 207 was supposed to meet up, but due to the discovery of a wetland in the environmental study, SR 207 would not intersect with SR 180.<ref>{{cite news|url=https://www.chillicothegazette.com/story/news/2019/10/25/construction-begins-ross-207-extension-roundabout-project/4007111002/|title=Construction begins on Ross-207 extension, roundabout project|last=Barnhart|first=Toria|newspaper=Chillicothe Gazette|date=October 25, 2019|accessdate=February 21, 2020}}</ref> Construction was completed the following October.<ref>{{cite web|url=https://www.transportation.ohio.gov/wps/portal/gov/odot/about-us/news/district-9/state-route-207-connector-opens-in-ross-county|title=State Route 207 Connector opens in Ross County|publisher=Ohio Department of Transportation|date=October 8, 2020|accessdate=December 19, 2020}}</ref>
==Major intersections== {{OHinttop|length_ref=<ref name="SLD_180ROS"/><ref name="SLD_180PIC"/><ref name="SLD_180HOC"/>}} {{OHint |county=Ross |cspan=2 |ctdab=Ross |location=Green Township |mile=0.00 |road={{jct|state=OH|OH|159|city1=Chillicothe}} |notes=Roundabout}} {{OHint|location=Adelphi |mile=11.79 |road={{jct|state=OH|OH|327|dir1=South|name1=Concord Street|road|Main Street|location1=Tar Hollow State Forest}} |notes=Northern terminus of SR 327}} {{OHint |county=Pickaway |ctdab=Pickaway |location=Salt Creek Township |mile=12.44 |type=concur |road={{jct|state=OH|OH|56|dir1=West|city1=Circleville}} |notes=Western end of SR 56 concurrency}} {{OHint |county=Hocking |cspan=5 |location=Laurelville |mile=13.09 |type=concur |road={{jct|state=OH|OH|56|dir1=East|name1=Pike Street|road|Water Street}} |notes=Eastern end of SR 56 concurrency}} {{OHint |ctdab=Hocking |location=Perry Township |mile=20.39 |type=concur |road={{jct|state=OH|OH|374|dir1=South}} |notes=Western end of SR 374 concurrency}} {{OHint |ctdab=Hocking |location=Laurel Township |lspan=2 |mile=25.01 |type=concur |road={{jct|state=OH|OH|374|dir1=North}} |notes=Eastern end of SR 374 concurrency}} {{OHint |mile=25.51 |road={{jct|state=OH|OH|678|dir1=South|city1=Gibisonville}} |notes=Northern terminus of SR 678}} {{OHint |ctdab=Hocking |location=Falls Township |mile=29.55 |road={{jct|state=OH|US|33|city1=Athens|city2=Columbus|CR|33A|county2=Hocking}} |notes=Interchange}} {{OHintbtm|keys=concur}}
==References== {{Attached KML|display=title,inline}} {{Portal|Ohio|U.S. Roads}} {{Reflist}}
180 180 180 180