US 18 east end, 1970s(?)-present
Milwaukee
US 18 east end, 1926-1970s(?)
Milwaukee
US 141 south end, 1981-present
near Green Bay
US 141 north end, 1926-1929
Green Bay
US 141 south end, 1926-1930s
Milwaukee
US 141 south end, 1930s-1950s(?)
Milwaukee
US 141 south end, 1950s(?)-1970s(?)
Milwaukee
US 141 south end, 1970s(?)-1977
Milwaukee
US 16 east end, 1963(?)-1978
Waukesha
US 118 east end, 1926-1936
Dodgeville
US 118 west end, 1926-1936
Dickeyville
US 151 south end, 1926-1938
Madison
US 151 north end, 1926-1940s
Fond du Lac
US 151 north end, 1940s-present
Manitowoc
US 151 north end (possible 1940s-?)
Manitowoc
US 110 south end, 1926-1938
Oshkosh
US 110 north end, 1926-1938
Fremont
US 53 south end, 1926-1939
La Crosse
US 53 south end, 1939-2004
La Crosse
US 53 south end, 2004-present
La Crosse
US 53 north end, 1926-1934 (probable)
Superior (US 53 traffic probably would've been directed over this now-dismantled bridge, but the designation ended at the Minnesota state line until 1934).
US 63 north end, 1990-present
near Ashland
US 63 north end, 1934-1990
Ashland
US 51 north end, 1926-1950s(?) (probable)
Hurley (assuming US 2 originally followed the red path I've drawn in).
US 51 north end, 1950s(?)-present
Hurley
