{{short description|Highway in Wisconsin}} {{Use American English|date=May 2025}} {{Use mdy dates|date=January 2025}} {{Infobox road |state=WI |type=WI |route=30 |maint=[[WisDOT]] |map={{maplink-road|from=Wisconsin Highway 30.map}} |map_custom=yes |map_notes=WIS 30 highlighted in red |length_mi=3.43 |length_ref= <ref name="WIH_30">{{cite web | last = Bessert | first = Chris | title =Wisconsin Highways: Highways 30-39 (Highway 30) | work =Wisconsin Highways | url =https://www.wisconsinhighways.org/listings/WiscHwys30-39.html#STH-030 | accessdate = 2007-03-20}}{{self-published inline|certain=yes|date=December 2023}}</ref> |length_round=2 |direction_a=West |direction_b=East |terminus_a={{Jct|state=WI|US|151}} in [[Madison, Wisconsin|Madison]] |junction={{Jct|state=WI|US|51}} in [[Madison, Wisconsin|Madison]] |terminus_b={{Jct|state=WI|I|39|I|90|I|94}} in [[Madison, Wisconsin|Madison]] |counties=[[Dane County, Wisconsin|Dane]] |previous_type=WI |previous_route=29 |next_type=WI |next_route=31 }} '''State Trunk Highway 30''' (often called '''Highway 30''', '''STH-30''' or '''WIS 30''') is a [[state highway (US)|state highway]] in the [[U.S. state]] of [[Wisconsin]]. It runs east&ndash;west in suburban [[Madison, Wisconsin|Madison]] as a connector [[freeway]] between [[Interstate 39]], [[Interstate 90]], and [[Interstate 94]] at the Badger Interchange to [[U.S. Route 151|US 151]] east of Downtown Madison. This section is all that remains of the highway that stood as of 1964 after [[Interstate 94|I-94]] was commissioned.<ref name="WIH_30" /> This is the second alignment of the route number - the first beginning in [[Platteville, Wisconsin|Platteville]] and ending in [[Readstown, Wisconsin|Readstown]].

==Route description== [[File:Wisconsin Highway 30 West Terminus from US151.jpg|thumb|left|Western terminus (right) from US 151]] WIS 30 is a freeway for its entire length and lies completely within the city of Madison. It junctions with [[U.S. Route 151|US 151]] at a [[folded diamond interchange]]. West of the terminus, the road becomes Aberg Avenue which provides a shortcut to [[Wisconsin Highway 113|WIS 113]] north, providing a near-direct through route to [[Dane County Regional Airport]] to the north via International Lane. WIS 30 has three interchanges between termini: one at Fair Oaks Avenue, one at Stoughton Road ([[U.S. Route 51 in Wisconsin|US 51]]) and a half-diamond at North Thompson Drive (CTH-T). The Thompson Drive interchange features [[roundabout]]s at the ramp junctions with the crossing street. WIS 30 ends at its junction with Interstates [[Interstate 39|39]], [[Interstate 90 in Wisconsin|90]] and [[Interstate 94 in Wisconsin|94]] at what is commonly known as the Badger Interchange. The roadway continues as Interstate 94 east, heading towards Milwaukee. The interchanges are numbered sequentially from west to east.<ref name="google_milwaukee">{{google maps |url=https://maps.google.com/maps?q=Madison,+WI,+United+States+of+America&ie=UTF8&ll=43.104743,-89.315157&spn=0.022998,0.080338&z=14 |title=Madison, WI, United States of America |accessdate=2008-02-24}}</ref>

==History== From 1924 until the completion of [[Interstate 94 in Wisconsin|I-94]] between [[Madison, Wisconsin|Madison]] and [[Milwaukee]], WIS 30 ran from the [[Wisconsin State Capitol]] from King Street east to Wisconsin Avenue in downtown [[Milwaukee]], along with [[Wisconsin Highway 19|WIS 19]]. The route of WIS 30 had several different alignments during that time, all which generally parallel the current routing of I-94.<ref name="WIH_30" />

WIS 30 was the main route between the two largest cities in the state until I-94's completion in the late 1960s.<ref name="WIH_30" />

==Exit list== {{jcttop|exit|state=WI|county=Dane|location=Madison|type=highway|length_ref=<ref name="Google">{{Google maps|url=https://www.google.com/maps/dir/43.1077326,-89.3394233/43.1026511,-89.2753593/@43.1081068,-89.2858939,14.46z?entry=ttu|title=Route of WIS 30|access-date=January 2, 2024}}</ref>}} {{WIint|exit |mile=0.00 |exit=1A |road={{jct|state=WI|US|151|name1=East Washington Avenue}} |notes=Western terminus; road continues as Aberg Avenue }} {{WIint|exit |mile=0.26 |exit=1B |road=Fair Oaks Avenue |notes= }} {{WIint|exit |mile=0.5 |exit=1C |road={{jct|state=WI|US|51|name1=Stoughton Road}} |notes= }} {{WIint|exit |type=incomplete |mile=1.4 |exit=2 |road= {{jct|state=WI|CTH|T|name1=Thompson Drive}} |notes=Eastbound exit and westbound entrance }} {{WIint|exit |mile=2.1 |mspan=2 |exit=3A |road={{jct|state=WI|I|39|dir1=south|I|90|dir2=east|city1=Janesville|location2=[[Chicago, Illinois|Chicago]]}} |notes=Left exit signed as exit 240A westbound, left entrance eastbound; I-90 west exits 138A-B }} {{WIint|exit |type=incomplete |mile=none |exit=3B |road={{jct|state=WI|I|39|dir1=north|I|90|dir2=west|I|94|dir3=west|city1=Wisconsin Dells}} |notes=Eastbound left exit and westbound entrance; I-90 east exit 138B }} {{WIint|exit |mile=2.3 |road={{jct|state=WI|I|94|dir1=east|city1=Milwaukee}} |notes=Eastern terminus; I-94 exit 240 }} {{jctbtm|exit|keys=incomplete}}

==See also== *{{portal-inline|U.S. Roads}}

==References== {{reflist}}

==External links== {{Attached KML|display=title,inline}} *{{Commons category-inline|Wisconsin Highway 30}}

[[Category:State highways in Wisconsin|030]] [[Category:Transportation in Dane County, Wisconsin]] [[Category:Transportation in Madison, Wisconsin]] [[Category:Freeways in the United States]]