{{short description|State highway in Wisconsin, United States}} {{Use American English|date=May 2025}} {{Use mdy dates|date=February 2021}} {{Infobox road |state=WI |type=WI |route=91 |map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=260|type=line|stroke-width=3|from.map}} |map_custom=yes |map_notes=WIS 91 highlighted in red |length_mi=18.83 |length_ref= <ref name="Google Maps">{{google maps |access-date = February 6, 2021 |title = Overview Map of WIS 91 |url = https://www.google.com/maps/dir/43.9683367,-88.9442013/43.9901159,-88.5826307/@44.0011607,-88.8519191,11z/data=!4m2!4m1!3e0 }}</ref><ref name="WH1">{{cite web |last = Bessert |first = Chris |title = Highways 90–99 |work = Wisconsin Highways |url = http://www.wisconsinhighways.org/listings/WiscHwys90-99.html#STH-091 |access-date = March 20, 2007 }}{{sps|certain=yes|date=February 2021}}</ref> |length_round=2 |direction_a=West |direction_b=East |terminus_a={{Jct|state=WI|WI|49}} in Berlin |terminus_b={{Jct|state=WI|I|41|US|41|WI|44}} in Oshkosh |counties=Green Lake, Winnebago |previous_type=WI |previous_route=90 |next_type=WI |next_route=92 }} '''State Trunk Highway 91''' (often called '''Highway 91''', '''STH-91''' or '''WIS 91''') is a state highway in the U.S. state of Wisconsin. It runs east–west in east-central Wisconsin from near Berlin to Oshkosh.
==Route description== Starting in WIS 49 in Berlin, WIS 91 starts to travel eastward, passing Koro. South of Waukau, it intersects WIS 116 and CTH-M. Going further east through the Oshkosh city limit, WIS 91 intersects and starts to run concurrently with WIS 44. However, as soon as they meet I-41/US 41 at a diamond interchange, WIS 91 ends there. WIS 44, on the other hand, continues northeast to downtown Oshkosh.<ref name="Google Maps"/>
==History== Initially, in 1919, WIS 91 was established along part of present-day WIS 44. It traveled from WIS 23/WIS 49 (now just WIS 23) in Ripon to WIS 15 (now US 45) in Oshkosh.<ref>{{Cite WisDOT map|year=1919}}</ref><ref>{{Cite WisDOT map|year=1920}}</ref> In 1924, WIS 91 was relocated from the Ripon–Oshkosh route to the Merill–McCord route, causing CTH-E to move just northwest of its former route. This was done in response to the northeastern extension of WIS 44. The new route traveled from US 51 in Merill to US 8 in McCord along present-day WIS 107, pre-bypass alignment of WIS 10 (after 1926, US 51<ref>{{Cite WisDOT map|year=1927}}</ref>), and present-day CTH-CC. It also functioned as an alternate route of WIS 10.<ref>{{Cite WisDOT map|year=1923}}</ref><ref>{{Cite WisDOT map|year=1924}}</ref>
By 1935, WIS 91 was removed south of the intersection of US 51 (now CTH-A) north of downtown Tomahawk.<ref>{{Cite WisDOT map|year=1934}}</ref><ref>{{Cite WisDOT map|year=1935}}</ref> In 1937, the rest of WIS 91 was removed in favor of turning this back to local control (replaced by CTH-CC).<ref>{{Cite WisDOT map|year=1937}}</ref><ref>{{Cite WisDOT map|year=1938}}</ref> This time, the route remained decommissioned for around a year. By 1939, WIS 91 was readded right near the location of its second alignment. It traveled from US 51 (now CTH-A) north of Tomahawk to US 8 in Bradley.<ref>{{Cite WisDOT map|year=1938}}</ref><ref>{{Cite WisDOT map|year=1939}}</ref> In the mid-1980s, WIS 91 was decommissioned again in favor of the opening of US 51's Tomahawk Bypass and CTH-U.<ref>{{Cite WisDOT map|year=1983}}</ref><ref>{{Cite WisDOT map|year=1987}}</ref> It remained decommissioned until 1996 when WIS 91 was readded again, traveling from Berlin to Oshkosh. It superseded a southernmost portion of WIS 116 and CTH-X. This time, the new routing still exists to this day.<ref>{{Cite WisDOT map|year=1996}}</ref><ref>{{Cite WisDOT map|year=1997}}</ref>
==Major intersections== {{Jcttop}} {{WIint |county=Green Lake |location=Berlin |mile= |road={{Jct|state=WI|WI|49|name1=Huron Street|road|Spring Street}} |notes=Roadway continues as northbound WIS 49 }} {{WIint |county=Winnebago |cspan=3 |town=Rushford |mile= |road={{Jct|state=WI|WI|116|dir1=north|city1=Omro}} }} {{WIint |location=Oshkosh |lspan=2 |type=concur |mile= |road={{Jct|state=WI|WI|44|dir1=south|city1=Ripon}} |notes=Western end of WIS 44 concurrency }} {{WIint |type=concur |mile= |road={{Jct|state=WI|I|41|US|41|noshield2=yes|city1=Green Bay|city2=Milwaukee}}<br>{{Jct|state=WI|WI|44|dir1=north|name1=South Park Avenue}} |notes=Roadway continues as northbound WIS 44 }} {{Jctbtm|keys=concur}}
==See also== *{{portal-inline|U.S. Roads}}
==References== {{reflist}}
==External links== {{Attached KML|display=title,inline}} {{Commonscat|Wisconsin Highway 91}} *[http://www.state-ends.com/wisconsin/wi/91/ WIS 91 Terminus Photos]
091 Category:Transportation in Green Lake County, Wisconsin Category:Transportation in Winnebago County, Wisconsin Category:U.S. Route 51