View source for U.S. Route 151

{{Short description|Highway in Iowa and Wisconsin}}
{{Use American English|date=April 2025}}
{{Use mdy dates|date=April 2015}}
{{Infobox road
| country = USA
| type = US
| route = 151
| marker_image = {{infobox road/shieldmain/USA|state=WI|type=US|route=151}}
| length_mi = 324
| length_ref = <ref name=AASHTO>{{cite web |title= U.S. Route Number Database |url= https://www.google.com/maps/dir/41.6867543,-91.9109841/44.0732089,-87.7111327/@43.0873348,-90.460281,8z/data=!4m24!4m23!1m20!3m4!1m2!1d-91.9110618!2d41.6880874!3s0x87e5b161c0bd14b3:0xcc379d911b1a41bb!3m4!1m2!1d-91.8355268!2d41.8773466!3s0x87e5aacddaa8e003:0x5cab03f3fb0f85ad!3m4!1m2!1d-89.393986!2d43.0455191!3s0x880652cdda4a661f:0x9ddb8c615b0e53e1!3m4!1m2!1d-89.3789313!2d43.0729267!3s0x88065315902b4b6b:0xb1c0fa24b3a1dc26!1m0!3e0}}</ref>
| map = {{maplink-road|from=U.S. Route 151.map}}
| map_custom = yes
| map_notes = US&nbsp;151 highlighted in red
| established = 1926
| direction_a = South
| direction_b = North
| terminus_a = {{jct|state=IA|I|80}} near [[Williamsburg, Iowa|Williamsburg, IA]]
| junction = {{plainlist|
*{{Jct|state=IA|US|6}} at the [[Amana Colonies]]
*{{Jct|state=IA|US|30|US|218}} in [[Cedar Rapids, Iowa|Cedar Rapids, IA]]
*{{Jct|state=IA|I|380|US|218|AOTS}} in Cedar Rapids, IA
*{{jct|state=IA|US|52}} near [[Dubuque, Iowa|Dubuque, IA]]
*{{jct|state=IA|US|20}} in Dubuque, IA
*{{jct|state=IA|US|61}} from Dubuque to [[Dickeyville, Wisconsin|Dickeyville, WI]]
*{{jct|state=WI|US|12|US|14|US|18}} in [[Madison, Wisconsin|Madison, WI]]
*{{jct|state=WI|US|51}} in Madison, WI
*{{jct|state=WI|I|39|I|90|I|94}} in Madison, WI
*{{jct|state=WI|I|41|US|41|US|45}} in [[Fond du Lac, Wisconsin|Fond du Lac, WI]]
}}
| terminus_b = {{Jct|state=WI|I|43|WI|42}} in [[Manitowoc, Wisconsin|Manitowoc, WI]]
| states = {{flatlist|
*[[Iowa]]
*[[Wisconsin]]
}}
| counties = {{flatlist|
*'''Iowa'''
**[[Iowa County, Iowa|Iowa]]
**[[Benton County, Iowa|Benton]]
**[[Linn County, Iowa|Linn]]
**[[Jones County, Iowa|Jones]]
**[[Dubuque County, Iowa|Dubuque]]
*'''Wisconsin'''
**[[Grant County, Wisconsin|Grant]]
**[[Lafayette County, Wisconsin|Lafayette]]
**[[Iowa County, Wisconsin|Iowa]]
**[[Dane County, Wisconsin|Dane]]
**[[Columbia County, Wisconsin|Columbia]]
**[[Dodge County, Wisconsin|Dodge]]
**[[Fond du Lac County, Wisconsin|Fond du Lac]]
**[[Calumet County, Wisconsin|Calumet]]
**[[Manitowoc County, Wisconsin|Manitowoc]]
}}
| spur_of = 51
| spur_type = US
| system1 = {{infobox road/browselinks/USA|state=IA}}
| system2 = {{infobox road/browselinks/USA|state=WI}}
| browse = {{ia browse|previous_type=IA|previous_route=150|route=IA|next_type=IA 1961|next_route=152}}{{wi browse|previous_type=WI|previous_route=150|route=WI|next_type=WI|next_route=152}}{{wi browse|previous_type=WI|previous_route=117|route=US&nbsp;118|next_type=WI|next_route=118}}
}}
'''U.S. Highway 151''' ('''US&nbsp;151''') is a [[United States Numbered Highway]] that runs through the states of [[Iowa]] and [[Wisconsin]]. The southern terminus for US&nbsp;151 is at a junction with [[Interstate 80]] (I-80) in [[Iowa County, Iowa]], and its northern terminus is at [[Manitowoc, Wisconsin]]. The route, from south to north follows a northeasterly path through the two states.

US 151 is an important corridor which connects [[Cedar Rapids, Iowa]] to [[Fond du Lac, Wisconsin]] with an expressway (except for a segment about ten miles where it uses arterial roads instead in [[Madison, Wisconsin]]).

Approximately {{convert|7|mi|spell=in}} south of [[Dubuque, Iowa]], US&nbsp;151 joins with [[U.S. Route 61 in Iowa|US&nbsp;61]]. The two highways share a route from there to [[Dickeyville, Wisconsin]]. {{convert|5|mi|spell=In}} south of Dubuque, US&nbsp;61/US&nbsp;151 joins with [[U.S. Route 52 in Iowa|US&nbsp;52]] and shares a route with US&nbsp;52 until it veers south in [[Key West, Iowa|Key West]].

In Wisconsin, US&nbsp;61/US&nbsp;151 joins with [[Wisconsin Highway&nbsp;35]] (WIS&nbsp;35) about {{convert|1|mi|spell=in}} north of the Iowa–Wisconsin border. At Dickeyville, US&nbsp;151 splits off and heads northeast to [[Platteville, Wisconsin|Platteville]]. US&nbsp;61/WIS&nbsp;35 continues north. US&nbsp;151 later joins with [[U.S. Route 18 in Wisconsin|US&nbsp;18]] near [[Dodgeville, Wisconsin|Dodgeville]]. The two highways share a route all the way to [[Madison, Wisconsin|Madison]].

==Route description==
===Iowa===
[[File:US151END.jpg|thumb|left|The southern terminus of US 151 at I-80]]
US&nbsp;151 begins at exit 225 along [[Interstate 80 in Iowa|I-80]] in rural [[Iowa County, Iowa|Iowa County]] north of [[Williamsburg, Iowa|Williamsburg]]. The highway heads to the north and intersects [[U.S. Route 6 in Iowa|US&nbsp;6]] outside of [[Homestead, Iowa]]. US&nbsp;151 turns east onto US&nbsp;6 and the two routes [[concurrency (road)|run concurrently]] for about {{convert|2|mi|spell=in|0}} until US&nbsp;6 splits to the east at Homestead. US&nbsp;151 continues to the north and crosses the [[Iowa River]] on its way to Amana, the main village of the [[Amana Colonies]] and the eastern end of [[Iowa Highway 220]] (Iowa&nbsp;220).<ref name="AMANA">{{cite web |author= Amana Colonies Convention & Visitors Bureau |year= 2008 |url= http://www.amanacolonies.org/findus.htm |title= How to Find Us |publisher= Amana Colonies Convention & Visitors Bureau |access-date= October 21, 2008 |archive-url= https://web.archive.org/web/20080514205822/http://www.amanacolonies.org/findus.htm |archive-date= May 14, 2008}}</ref> The road clips the southeastern corner of [[Benton County, Iowa]] at [[Walford, Iowa|Walford]] and it turns to the northeast toward [[Fairfax, Iowa|Fairfax]]. When it reaches the [[U.S. Route 30 in Iowa|US&nbsp;30]]&nbsp;/ [[U.S. Route 218|US&nbsp;218]] freeway in [[Cedar Rapids, Iowa|Cedar Rapids]], US&nbsp;151 turns east onto the highway while [[U.S. Route 151 Business (Cedar Rapids, Iowa)|US&nbsp;151 Business]] continues northeast on Williams Boulevard SW. The freeway is dotted with interchanges providing access to southern Cedar Rapids, most importantly Edgewood Road SW, [[Interstate 380 (Iowa)|I-380]], and C Street SW. Just east of the [[Cedar River (Iowa River)|Cedar River]], US&nbsp;151 exits from US&nbsp;30, which continues east toward [[Clinton, Iowa|Clinton]].

[[File:US151March2006.JPG|thumbnail|left|US&nbsp;151, approximately {{convert|8|mi|spell=in}} south of [[Dubuque, Iowa]]; a scene from the movie ''[[Field of Dreams]]'' was filmed on this particular segment of the highway.]]
The route splits from the other roads and continues toward [[Dubuque, Iowa|Dubuque]] as an [[Limited-access road|expressway]]. This {{convert|65|mi|km|adj=on}} stretch crosses many major rivers including both the [[Wapsipinicon River|Wapsipinicon]] and the [[Maquoketa River|Maquoketa]]. The road eventually goes into the [[Driftless Area]] where it meets up with US&nbsp;61 around the [[Dubuque Regional Airport]].<ref name="DBQ">{{cite web |author= Dubuque Regional Airport |year= 2000 |url= http://www.flydbq.com/faq.cfm |title= Frequently Asked Questions |publisher= Dubuque Regional Airport |access-date=October 21, 2008 |archive-url= https://web.archive.org/web/20081121192930/http://www.flydbq.com/faq.cfm |archive-date= November 21, 2008}}</ref> US&nbsp;52 briefly joins the two routes, concurrently, for two miles south of Dubuque. The combined road then heads into the state of [[Wisconsin]].<ref name="WDOT">{{cite web |author= Wisconsin Department of Transportation Office of Public Affairs |date= August 16, 2010 |url= http://www.dot.wisconsin.gov/travel/road/exits-us151.htm |title= Exit Numbers on US&nbsp;151 |publisher= Wisconsin Department of Transportation |access-date= June 9, 2015 |url-status= dead |archiveurl= https://web.archive.org/web/20150302014510/http://www.dot.wisconsin.gov/travel/road/exits-us151.htm |archivedate= March 2, 2015 |df= mdy-all }}</ref>

===Dubuque to Madison===
US&nbsp;61/US&nbsp;151 crosses the [[Mississippi River]] into Wisconsin via the [[Dubuque-Wisconsin Bridge]] from Dubuque, Iowa and passes through a cut in the river ridge before turning northward to the western terminus of [[Wisconsin Highway 11|WIS&nbsp;11]] after {{convert|1|mi|km|spell=in}} of due east travel. [[Wisconsin Highway 35|WIS&nbsp;35]] and the [[Great River Road]] join the route at that interchange, heading north. The highway at this point is limited access highway with two lanes in each direction. The northward trek of the route passes through mixed residential and farmland as it crosses Badger Road and merges with Eagle Point Road. Eagle Point road merges with US&nbsp;151 from the left side of the road. The limited access portion ends at this interchange. Another pair of half [[diamond interchange]]s connect the highway with County Trunk Highway HHH (CTH-HHH) and CTH-H as it bypasses [[Kieler, Wisconsin|Kieler]] to the northwest. At [[Dickeyville, Wisconsin|Dickeyville]], US&nbsp;61, WIS&nbsp;35 and the Great River Road route exit north off of US&nbsp;151 into town. US&nbsp;151 passes Dickeyville to the east and descends into a valley cut northeast of the village, paralleling the Little Platte River and Blockhouse Creek within the valley for a {{convert|1|mi|km|adj=on|spell=in}} stretch before climbing back onto the ridge top on the other side of the valley.<ref name="google_dickeyville_valley">{{google maps |url=https://maps.google.com/?ie=UTF8&ll=42.665776,-90.53936&spn=0.103505,0.218697&t=p&z=12 |title=River Valley northeast of Dickeyville, WI |access-date=January 26, 2009}}</ref> US&nbsp;151 then approaches [[Platteville, Wisconsin|Platteville]] and enters a section of limited access at CTH-D (US&nbsp;151 Business). The limited access stretch ends after three interchanges {{convert|6|mi|km|spell=in}} to the east. The last of the interchanges is [[Wisconsin Highway 126|WIS&nbsp;126]]/CTH-G with access to [[Belmont, Wisconsin|Belmont]]. The route turns northeastward from this point, crosses the Cottage Inn Branch and begins the first of several descents into valleys, two of which are prior to passing [[Mineral Point, Wisconsin|Mineral Point]]<ref name="google_mineral_point_valley_1">{{google maps |url=https://maps.google.com/?ie=UTF8&ll=42.817188,-90.246677&spn=0.051626,0.109348&t=p&z=13 |title=Mineral Point, WI Valleys section 1 |link= no |access-date=January 26, 2009}}</ref> and another two while passing the city.<ref name="google_mineral_point_valley_2">{{google maps |url=https://maps.google.com/?ie=UTF8&ll=42.858098,-90.185566&spn=0.051592,0.109348&t=p&z=13 |title=Mineral Point, WI Valleys section 2 |link= no |access-date=January 26, 2009}}</ref>

The highway is limited access between the two interchanges that provide access to Mineral Point: CTH-O and [[Wisconsin Highway 23|WIS&nbsp;23]]. WIS&nbsp;23 joins US&nbsp;151 heading northbound at that point until the first interchange at Dodgeville. This interchange begins another short stretch of freeway to the point where [[U.S. Route 18 in Wisconsin|US&nbsp;18]] joins the route. US&nbsp;18/US&nbsp;151 heads eastbound past that interchange.<ref name="google_mineral_point_valley_2"/>

The section of expressway past Dodgeville passes [[Ridgeway, Wisconsin|Ridgeway]] and [[Barneveld, Wisconsin|Barneveld]]. Access to Ridgeway is by an interchange and a surface intersection with a short business route on CTH-HHH. The interchange was previously an intersection; however, it was announced in 2011 that the first intersection would be closed, and an exit would be constructed, due to the numerous fatal accidents that happen at the intersection each year.<ref>{{Cite web |last=bnovak@madison.com |first=BILL NOVAK {{!}} The Capital Times {{!}} |date=2011-06-15 |title=US 18/151 near Ridgeway getting interchange to boost safety |url=https://madison.com/news/local/us-18-151-near-ridgeway-getting-interchange-to-boost-safety/article_0e5837e2-974c-11e0-b4a7-001cc4c03286.html |access-date=2023-10-01 |website=Wisconsin State Journal |language=en}}</ref> Access to Barneveld is at an interchange with CTH-ID and an at-grade intersection with CTH-K. CTH-ID parallels US&nbsp;18/US&nbsp;151 for the entire stretch between Barneveld and [[Mount Horeb, Wisconsin|Mount Horeb]]. A section of freeway begins at [[Wisconsin Highway 78|WIS&nbsp;78]] and ends at the other end of CTH-ID as the highway bypasses Mount Horeb just to the south of the city's passing residential subdivisions. A mix of grade separation and level intersections cross the winding highway as it continues eastward until the interchange with CTH-MV (Verona Avenue) begins a section of freeway that bypasses [[Verona, Wisconsin|Verona]] to the south. This section provides access to four interchanges including the two endpoints of CTH-MV. The freeway continues into [[Fitchburg, Wisconsin|Fitchburg]] and provides access to two interchanges at CTH-PD (McKee Road) and Williamsburg Way. The freeway then ends. The road continues as an urban multilane highway known as Verona Road as it enters Madison. Verona Road passes through a residential and commercial area on the Southwest Side of Madison. US&nbsp;18 and US&nbsp;151 merge east on the West Beltline Highway—joining [[U.S. Highway 12 in Wisconsin|US&nbsp;12]] and [[U.S. Highway 14 in Wisconsin|US&nbsp;14]].<ref name="google_mineral_point_valley_2"/>

===Madison metropolitan area===
The four US&nbsp;Highways run concurrently for about {{convert|3|mi|km|spell=in}} to Park Street. <ref name="google_madison_beltline">{{google maps |url=https://maps.google.com/maps?f=d&source=s_d&saddr=43.036174,-89.393692&daddr=Verona+Rd&hl=en&geocode=%3BFSiukAIdRg-r-g&mra=mi&mrsp=0,1&sz=13&sll=43.038156,-89.397469&sspn=0.079546,0.154495&ie=UTF8&t=p&z=13 |title=Madison Beltline |link= no |access-date=January 26, 2009}}</ref> At this interchange, US&nbsp;14 turns south off the beltline towards [[Oregon, Wisconsin|Oregon]], and US&nbsp;151 turns north and into central Madison on South Park Street. It crosses the same railroad corridor and passes Monona Bay to the west along South Park Street. US&nbsp;151 turns northeast onto West Washington Avenue for about {{convert|1500|ft|m}} then follows Proudfit Street and North Shore Drive—paralleling the Monona Bay shore—and turns north onto John Nolen Drive. The street passes under the [[Monona Terrace|Monona Terrace Convention Center]] as it passes to the south and east of downtown Madison. US&nbsp;151 turns northwest onto South Blair Street for three city blocks to East Washington Avenue—where it turns northeast and follows East Washington Avenue, bisecting the [[Madison Isthmus]], and leading out of the city to the east. The western terminus of [[Wisconsin Highway 30|WIS&nbsp;30]] meets US&nbsp;151 about {{convert|3|mi|km|spell=in}} northeast of the South Blair Street turn,<ref name="google_fdl_2ln">{{google maps |url= https://maps.google.com/maps?f=d&source=s_d&saddr=US-151%2FE+Washington+Ave&daddr=43.107312,-89.33876&hl=en&geocode=FfpTkQIdqjGs-g%3B&mra=dme&mrcr=0&mrsp=1&sz=14&sll=43.103427,-89.339876&sspn=0.039731,0.077248&ie=UTF8&t=p&z=14 | title=Madison: US&nbsp;30 Terminus from Downtown|link= no |access-date=February 9, 2009}}</ref> and US&nbsp;51 crosses US&nbsp;151 {{convert|1|mi|km|spell=in}} further northeast.<ref name="google_mineral_point_valley_2"/>

===Madison to Fond du Lac===
<!-- This outdated photo should be replaced. [[File:Highway151atHighway45.jpg|left|thumb|US&nbsp;45 exit ramp in Fond du Lac in 2006. The ramp has since been replaced by a roundabout interchange.]] -->
At a [[cloverleaf interchange]] with [[Interstate 39|I-39]]/[[Interstate 90 in Wisconsin|I-90]]/[[Interstate 94 in Wisconsin|I-94]], a section of freeway begins and continues along US&nbsp;151 northeast through commercial zones into residential areas. A highway bypass was constructed north and west of [[Sun Prairie, Wisconsin|Sun Prairie]], but so much commercial and residential development subsequently happened to the north and west of the bypass that the route essentially divides Sun Prairie in half. The route now has four interchanges with highways and streets in Sun Prairie.  After Sun Prairie, US&nbsp;151 passes through farmland, heading toward [[Columbus, Wisconsin|Columbus]]. The highway bypasses the city via a partial beltline to the north and east, completely clearing the city. [[Wisconsin Highway 16|WIS&nbsp;16]] and [[Wisconsin Highway 60|WIS&nbsp;60]] crosses under US&nbsp;151 about midway along the Columbus bypass. US&nbsp;151 becomes an expressway with level intersections after the interchange with [[Wisconsin Highway 73|WIS&nbsp;73]] at the end of the bypass portion. The route becomes a freeway at [[Beaver Dam, Wisconsin|Beaver Dam]], bypassing the city to the southeast. The route follows the edge of residential zones of the city before passing an industrial area at the northeastern end of the bypass. US&nbsp;151 crosses at-grade intersections after the interchange with CTH-A northeast of Beaver Dam and encounters one more freeway section at [[Waupun, Wisconsin|Waupun]], bypassing the city to the east. The four-lane expressway of US&nbsp;151 continues east, bypassing [[Fond du Lac, Wisconsin|Fond du Lac]] to the south and east. This expressway provides a mixture of at-grade intersections and grade-separated interchanges at [[Interstate 41|I-41]]/[[U.S. Route 41 in Wisconsin|US&&nbsp;41]] and WIS&nbsp;23.<ref name="google_mineral_point_valley_2"/> WisDOT currently is studying changes to two sections of US&nbsp;151. The first study would preserve the Fond du Lac Bypass from I-41 to WIS&nbsp;23, with the ultimate goal being freeway conversion.<ref name="FdL Bypass">{{cite web |author= Wisconsin Department of Transportation Northeast Region |date= October 15, 2008 |url= http://www.dot.wisconsin.gov/projects/us151fdlstudy/index.htm |title= US&nbsp;151 Fond du Lac Bypass Corridor Preservation Study |publisher= Wisconsin Department of Transportation |access-date= March 1, 2009 |archive-url= https://web.archive.org/web/20090318182241/http://www.dot.wisconsin.gov/projects/us151fdlstudy/index.htm |archive-date= March 18, 2009 }}</ref> The second study is examining freeway conversions to the route from WIS&nbsp;73 in Columbus to WIS&nbsp;49 in Waupun.<ref name="Freeway Study">{{cite web |author= Wisconsin Department of Transportation Southwest Region |date= May 27, 2014 |url= http://www.dot.wisconsin.gov/projects/us151freeway/index.htm |title= US&nbsp;151 Freeway Conversion Study Columbus–Waupun, Dodge County |publisher= Wisconsin Department of Transportation |access-date= June 9, 2015 |url-status= dead |archiveurl= https://web.archive.org/web/20140722214702/http://dot.wisconsin.gov/projects/us151freeway/index.htm |archivedate= July 22, 2014 |df= mdy-all }}</ref>

===Fond du Lac to Manitowoc===
[[File:USRoute151NorthTerminus2.jpg|right|thumb|The northeast terminus at US&nbsp;10 in Manitowoc]]
The multi-lane section of US&nbsp;151 ends after turning north away from Fond du Lac and the route follows the east shore of Lake Winnebago for about half the length of the shoreline. US&nbsp;151 then turns east at the intersection with [[Wisconsin Highway 55|WIS&nbsp;55]] and follows two-lane surface roads and briefly running concurrently with [[Wisconsin Highway 32|WIS&nbsp;32]] and [[Wisconsin Highway 57|WIS&nbsp;57]] in [[Chilton, Wisconsin|Chilton]]. The roadway passes through farmland throughout this section until it picks up [[WIS 42]] just outside of Manitowoc and ends at [[I-43]] while WIS 42 continues east into Manitowoc.
{{-}}

==History==
{{Unsourced section|date=December 2023}}
{{infobox road small
|state=WI
|type=US 1926
|route=118
|location=[[Dodgeville, Wisconsin|Dodgeville]] to [[Dickeyville, Wisconsin]]
|length_mi=
|length_ref=
|formed=1926
|deleted=1934
}}
US&nbsp;151 was one of the original U.S. Highways from 1926. At the time, it only ran from [[Fond du Lac, Wisconsin]], to Madison. In 1934, the highway was extended southwest to [[Cedar Rapids, Iowa]], incorporating the full length of former '''U.S. Highway&nbsp;118''' ([[Dodgeville, Wisconsin|Dodgeville]] to [[Dickeyville, Wisconsin|Dickeyville]]) and part of former [[U.S. Highway&nbsp;161]] ([[Dubuque, Iowa|Dubuque]] to [[Cedar Rapids, Iowa|Cedar Rapids]]; US&nbsp;161 from Cedar Rapids south to [[Keokuk, Iowa|Keokuk]] became US&nbsp;218). At the time, the southern end of the route was at Williams Blvd SW and 16th Ave SW, what was then US&nbsp;30 and US&nbsp;218. In the 1940s, the highway was extended northeast to Manitowoc.

===Illinois===
[[File:DubWisBridge051904.jpg|thumb|left|The [[Dubuque-Wisconsin Bridge]], [[Dubuque, Iowa]]. The bridge crosses the [[Mississippi River]] between Dubuque and [[Grant County, Wisconsin]]. The bridge is part of the US&nbsp;61&nbsp;/ US&nbsp;151 route.]]
In 1969, the [[Eagle Point Bridge]], which connected US&nbsp;151 and US&nbsp;61 with Wisconsin, was closed, and those highways were rerouted over the [[Julien Dubuque Bridge]] with [[U.S. Route 20|US&nbsp;20]] from Dubuque to [[East Dubuque, Illinois]]. The route then followed [[Illinois Route 35]] and [[Wisconsin Highway 35|WIS&nbsp;35]] north to what is now the current highway. In 1982, the [[Dubuque-Wisconsin Bridge]] opened, the old Eagle Point Bridge was demolished, and US&nbsp;151 and US&nbsp;61 were rerouted onto the new bridge. This is the only instance of US&nbsp;61 and US&nbsp;151 entering Illinois.

===Routings===
In 1981, the southern terminus of the highway was extended once again when the US&nbsp;30 bypass was built. The southern terminus was at the US&nbsp;151 and 30 interchange. By 1986, the main US&nbsp;151 was rerouted onto state highway 13 and US&nbsp;30 to bypass Cedar Rapids. The previous route through Cedar Rapids was renamed US&nbsp;151 Business (though the official state designation for it is [[Iowa Highway 922|Iowa&nbsp;922]]). Finally, in 1989, US&nbsp;151 was extended to its current southern end at exit 225 along I-80. This extension followed the old route of [[Iowa Highway 149|Iowa&nbsp;149]]. As a result, US&nbsp;151 became the main route through the [[Amana Colonies]].

US 151's northern terminus was changed in 2022 to end at I-43 instead of in downtown Manitowoc where WIS 42 traveled through before being rerouted onto I-43 in 1980.
{{-}}

==Exit list==
{{mileposts|section|date=December 2023}}
{{Jcttop|exit|state_col=State|length_ref=<ref name=DOTGIS>{{cite web |title=Road Network (Portal) |url=https://gis.iowadot.gov/agshost/rest/services/RAMS/Road_Network/FeatureServer/0 |publisher=Iowa Department of Transportation |access-date=April 14, 2021 |location=Ames |format=[[ESRI shapefile]] |date=April 9, 2021}}</ref>}}
{{IAint|exit
|sspan=35
|county=Iowa
|cspan=4
|township=Iowa
|ctdab=Iowa
|lspan=2
|mile=0.000
|espan=4
|road={{Jct|state=IA|I|80|CR|W21|dir2=south|city1=Davenport|city2=Des Moines}}
}}
{{IAint
|mile=5.646
|type=concur
|road={{Jct|state=IA|US|6|dir1=west|city1=Marengo}}
|notes=Southern end of US&nbsp;6 overlap
}}
{{IAint
|location=Amana Colonies
|lspan=2
|mile=7.588
|type=concur
|road={{Jct|state=IA|US|6|dir1=east|city1=Coralville}}
|notes=Northern end of US&nbsp;6 overlap
}}
{{IAint
|mile=10.502
|road={{Jct|state=IA|IA|220|dir1=west|city1=High Amana|city2=Middle Amana|city3=East Amana}}
}}
{{Jctco|exit|state=IA|county=Benton}}
{{IAint|exit
|county=Linn
|cspan=10
|location=Cedar Rapids
|lspan=6
|mile=24.364
|mile2=24.787
|exit=248
|type=concur
|road={{Jct|state=IA|US|30|dir1=west|US|218|dir2=north|US-Bus|151|dab3=Cedar Rapids|dir3=north|name3=Williams Boulevard SW|city1=Cedar Rapids|city2=Tama}}
|notes=Southern end of US&nbsp;30 and US&nbsp;218 overlaps
}}
{{IAint|exit
|mile=26.121
|exit=250
|road=Edgewood Road SW
}}
{{IAint|exit
|mile=28.008
|exit=252A
|road=6th Street SW
|notes=Former US&nbsp;218
}}
{{IAint|exit
|mile=28.342
|exit={{nowrap|252B-C}}
|type=concur
|road={{Jct|state=IA|I|380|US|218|dir2=south|AOTS|27|extra=airport|city1=Cedar Rapids|city2=Iowa City|location3=[[Eastern Iowa Airport|Airport]]}}
|notes=Northern end of US&nbsp;218 overlap; signed as exits 252B (southbound) and 252C (northbound)
}}
{{IAint|exit
|mile=29.019
|exit=253
|road=Bowling Street SW, Kirkwood Boulevard SW
}}
{{IAint|exit
|mile=30.017
|exit=254
|road={{Jct|state=IA|CR|W6E|name1=C Street SW|city1=Ely}}
}}
{{IAint|exit
|township=Bertram
|ctdab=Linn
|lspan=2
|mile=34.955
|mile2=35.416
|exit=259
|type=concur
|road={{Jct|state=IA|US|30|dir1=east|IA|13|dir2=begins|city1=Mount Vernon}}
|notes=Northern end of US&nbsp;30 overlap; southern end of Iowa 13 overlap
}}
{{IAint|exit
|mile=39.007
|espan=3
|road={{Jct|state=IA|Lincoln||CR|E48|county2=Linn|name2=Mount Vernon Road}}
|notes=Former US 30
}}
{{IAint
|location=Marion
|lspan=2
|mile=42.030
|road={{Jct|state=IA|IA|100|dir1=west|CR|E45|city1=Marion}}
}}
{{IAint
|mile=43.120
|type=concur
|road={{Jct|state=IA|US-Bus|151|dab1=Cedar Rapids|dir1=south|IA|13|dir2=north|location1=Marion|city2=Central City}}
|notes=Northern end of Iowa 13 overlap
}}
{{IAint|exit
|county=Jones
|cspan=7
|location=Fairview
|mile=54.640
|exit=49
|road={{Jct|state=IA|IA|1|dir1=south|CR|E34|city1=Martelle|location2=Mount Vernon}}
|notes=Former US 151
}}
{{IAint|exit
|location=Anamosa
|lspan=2
|mile=59.725
|exit=54
|road={{Jct|state=IA|IA|64|dir1=east|CR|E28|city1=Anamosa}}
}}
{{IAint|exit
|mile=60.674
|road=Old Dubuque Road
|notes=Former US 151
}}
{{IAint|exit
|location=Monticello
|lspan=2
|mile=68.432
|exit=63
|road={{Jct|state=IA|US-Bus|151|dab1=Monticello|CR|X44|city1=Monticello}}
|notes=US&nbsp;151 Business only signed northbound
}}
{{IAint|exit
|mile=70.649
|exit=65
|road={{Jct|state=IA|IA|38|city1=Monticello|city2=Hopkinton}}
}}
{{IAint|exit
|township=Lovell
|ctdab=Jones
|mile=72.566
|espan=2
|road={{Jct|state=IA|US-Bus|151|dab1=Monticello|location1=Monticello}}
|notes=US&nbsp;151 Business only signed southbound
}}
{{IAint
|township=Richland
|ctdab=Jones
|mile=79.454
|road={{Jct|state=IA|US-Bus|151|dab1=Cascade|city1=Cascade}}
|notes=US&nbsp;151 Business only signed northbound
}}
{{IAint|exit
|county=Dubuque
|cspan=13
|location=Cascade
|lspan=2
|mile=80.687
|exit=75
|road={{Jct|state=IA|IA|136|city1=Cascade|city2=Dyersville}}
}}
{{IAint|exit
|mile=82.210
|exit=77
|road={{Jct|state=IA|US-Bus|151|dab1=Cascade|location1=Cascade|city2=Farley}}
|notes=US&nbsp;151 Business only signed southbound
}}
{{IAint|exit
|township=Table Mound
|lspan=3
|ctdab=Dubuque
|mile=98.361
|road=Military Road
|notes=Former US 151
}}
{{IAint|exit
|mile=99.962
|mile2=100.580
|exit=—
|type=concur
|road={{Jct|state=IA|US|61|dir1=south|city1=Maquoketa}}
|notes=Southern end of US&nbsp;61 overlap
}}
{{IAint|exit
|mile=101.097
|exit=184
|type=concur
|road={{Jct|state=IA|US|52|dir1=North|city1=Peosta|city2=Waterloo}}
|notes=Southern end of US&nbsp;52 overlap
}}
{{IAint|exit
|location=Dubuque
|lspan=8
|mile=102.698
|road=Maquoketa Drive
|notes=Former US&nbsp;61&nbsp;/ US&nbsp;151
}}
{{IAint|exit
|mile=103.114
|exit=—
|type=concur
|road={{Jct|state=IA|US|52|dir1=south|GRR|dir2=south|city1=Bellevue}}
|notes=Northern end of US&nbsp;52 overlap; southern end of Great River Road overlap
}}
{{IAint|exit
|mile=104.447
|exit=187
|road=Grandview Avenue
}}
{{IAint|exit
|mile=104.743
|mile2=104.987
|exit=188
|type=incomplete
|road={{Jct|state=IA|US|20|to1=20|name1=[[Iowa Highway 946|Locust Street]]}}
|notes=Northbound exit and southbound entrance only
}}
{{IAint|exit
|mile=105.756
|exit=—
|road={{Jct|state=IA|US|20|to1=20|name1=[[Iowa Highway 946|Locust Street Connector]]}}
}}
{{IAint|exit
|mile=106.024
|exit=189A
|type=incomplete
|road=White Street&nbsp;/ Port of Dubuque
|notes=Northbound exit and southbound entrance only
}}
{{IAint|exit
|mile=106.407
|mile2=106.551
|exit=189B
|type=concur
|road={{Jct|state=IA|road|9th Street&nbsp;/ 11th Street|GRR|dir2=north}}
|notes=Former US&nbsp;52&nbsp;/ [[Iowa 3]]; northern end of Great River Road overlap
}}
{{IAint|exit
|mile=107.188
|mile2=107.899
|exit=190
|road=Kerper Boulevard&nbsp;/ Eagle Point District
|notes=Former US&nbsp;61&nbsp;/ US&nbsp;151
}}
{{Jctplace|exit
|river=[[Mississippi River]]
|river_wide=yes
|line=yes
|mile=108.151
|mile2=0
|bridge=[[Dubuque–Wisconsin Bridge]]; Iowa–Wisconsin state line
}}
{{WIint|exit
|sspan=69
|county=Grant
|cspan=9
|town=Jamestown
|lspan=3
|type=concur
|mile=
|exit=1
|road={{Jct|state=WI|WI|11|WI|35|GRR||dir1=west|dir2=south|dir3=south|city1=Janesville|location2=[[East Dubuque, Illinois|East Dubuque]]}}
|notes=Southern end of WIS&nbsp;35 overlap
}}
{{WIint|exit
|type=incomplete
|mile=
|exit=2
|road=Badger Road, Eagle Point Road
|notes=Northbound exit and southbound entrance only
}}
{{WIint|exit
|type=incomplete
|mile=
|exit=3
|road=Badger Road, Eagle Point Road
|notes=Southbound exit and northbound entrance only; Old U.S. 151
}}
{{WIint|exit
|location=Kieler
|lspan=2
|mile=
|exit=5
|espan=2
|road={{Jct|state=WI|CTH|HHH|to2=y|CTH|H|city1=Kieler|city2=Louisburg}}
}}
{{WIint
|mile=
|road={{Jct|state=WI|CTH|H|to2=y|CTH|HHH|city1=Kieler|city2=Louisburg}}
}}
{{WIint|exit
|location=Dickeyville
|type=concur
|mile=
|exit=8
|road={{Jct|state=WI|US|61|dir1=north|WI|35|dir2=north|GRR||dir3=north|CTH|HH|city1=Dickeyville|city2=Lancaster}}
|notes=Northern end of US&nbsp;61 and WIS&nbsp;35 overlaps
}}
{{WIint|exit
|town=Platteville
|mile=
|exit=18
|road={{Jct|state=WI|US-Bus|151|dab1=Platteville|CTH|D|city1=Platteville}}
|notes=US&nbsp;151 Business only signed northbound; exit for [[University of Wisconsin-Platteville|UW-Platteville]]
}}
{{WIint|exit
|location=Platteville
|lspan=2
|mile=
|exit=19
|road={{Jct|state=WI|WI|80|WI|81|city1=Platteville|city2=Darlington|city3=Lancaster}}
}}
{{WIint|exit
|mile=
|exit=21
|road={{Jct|state=WI|US-Bus|151|dab1=Platteville|CTH|XX|city1=Platteville}}
|notes=US&nbsp;151 Business only signed southbound
}}
{{WIint|exit
|county=Lafayette
|location=Belmont
|mile=
|exit=26
|road={{Jct|state=WI|WI|126|dir1=south|CTH|G|city1=Belmont|city2=Rewey}}
}}
{{WIint|exit
|county=Iowa
|cspan=6
|town=Mineral Point
|mile=
|exit=37
|road={{Jct|state=WI|US-Bus|151|dab1=Mineral Point|CTH|O|city1=Mineral Point}}
|notes=US&nbsp;151 Business only signed northbound
}}
{{WIint|exit
|location=Mineral Point
|type=concur
|mile=
|exit=40
|road={{Jct|state=WI|US-Bus|151|dab1=Mineral Point|WI|23|dir1=south|to2=y|WI|39|city1=Mineral Point|city2=Darlington|city3=Hollandale}}
|notes=US&nbsp;151 Business only signed southbound; Southern end of WIS&nbsp;23 overlap
}}
{{WIint|exit
|town=Dodgeville
|lspan=2
|type=concur
|mile=
|exit=44
|road={{Jct|state=WI|WI|23|dir1=north|city1=Dodgeville|city2=Spring Green|city3=Wisconsin Dells}}
|notes=Northern end of WIS&nbsp;23 overlap
}}
{{WIint|exit
|type=concur
|mile=
|exit=47
|road={{Jct|state=WI|US|18|dir1=west|city1=Dodgeville|city2=Prairie du Chien}}
|notes=Southern end of US&nbsp;18 overlap
}}
{{WIint|exit
|town=Ridgeway
|mile=
|exit=52
|road={{Jct|state=WI|CTH|BB|dir1=south|CTH|HHH|name1=Ridgevue Road|city1=Ridgeway}}
|notes=
}}
{{WIint|exit
|location=Barneveld
|mile=
|exit=58
|road={{Jct|state=WI|CTH|ID|dir1=west|city1=Blue Mounds|city2=Arena}}
}}
{{WIint|exit
|county=Dane
|cspan=27
|town=Blue Mounds
|mile=
|exit=65
|road={{Jct|state=WI|US-Bus|18|dab1=Mount Horeb|US-Bus|151|dab2=Mount Horeb|WI|78|city1=Mount Horeb|city2=Blanchardville}}
|notes=US&nbsp;18&nbsp;Business&nbsp;/ US&nbsp;151&nbsp;Business only signed northbound
}}
{{WIint|exit
|location=Mount Horeb
|mile=
|exit=69
|road={{Jct|state=WI|US-Bus|18|dab1=Mount Horeb|US-Bus|151|dab2=Mount Horeb|CTH|ID|city1=Mount Horeb}}
|notes=US&nbsp;18&nbsp;Business&nbsp;/ US&nbsp;151&nbsp;Business only signed southbound
}}
{{WIint|exit
|town=Springdale
|mile=
|exit=70
|road={{Jct|state=WI|CTH|PD|to2=y|CTH|P|city1=Cross Plains}}
}}
{{WIint|exit
|town=Verona
|mile=
|exit=75
|road={{Jct|state=WI|CTH|G|name1=Dairy Ridge Road|city1=Mount Vernon}}
}}
{{WIint|exit
|location=Verona
|lspan=3
|mile=
|mile2=
|exit=76
|road={{Jct|state=WI|US-Bus|18|dab1=Verona|US-Bus|151|dab2=Verona|CTH|MV|name3=W. Verona Avenue|road|Epic Lane}}
|notes=US&nbsp;18&nbsp;Business&nbsp;/ US&nbsp;151&nbsp;Business only signed northbound
}}
{{WIint|exit
|mile=
|exit=77
|road={{Jct|state=WI|WI|69|city1=Belleville|city2=Monroe}}
}}
{{WIint|exit
|mile=
|exit=79
|road={{Jct|state=WI|CTH|PB|to2=y|CTH|M|US-Alt|18|US-Alt|151|city1=Paoli|city2=Oregon}}
|notes=Alternate US&nbsp;151&nbsp;/ Alternate US&nbsp;18 only signed northbound
}}
{{WIint|exit
|town=Verona
|type=incomplete
|mile=
|exit=81
|road={{Jct|state=WI|US-Bus|18|dab1=Verona|US-Bus|151|dab2=Verona|CTH|MV|name1=E. Verona Avenue|city1=Verona}}
|notes=Southbound exit and northbound entrance only
}}
{{WIint|exit
|location=Fitchburg
|lspan=2
|mile=
|exit=83A
|road={{Jct|state=WI|CTH|PD|name1=McKee Road}}
}}
{{WIint|exit
|mile=
|exit=83B
|road=Williamsburg Way
}}
{{WIint|exit
|location=Madison
|lspan=11
|type=concur
|mile=
|exit=258
|road={{Jct|state=WI|US|12|dir1=west|US|14|dir2=west|city1=Baraboo|city2=La Crosse}}
|notes=Southern end of US&nbsp;12&nbsp;/ US&nbsp;14 overlap
}}
{{WIint|exit
|type=incomplete
|mile=
|exit=258A
|road=Seminole Highway
|notes=Southbound exit and northbound entrance only
}}
{{WIint|exit
|mile=
|exit=259
|road=Todd Drive
}}
{{WIint|exit
|mile=
|exit=260
|road={{Jct|state=WI|CTH|D|name1=Fish Hatchery Road|city1=Fitchburg}}
|notes=Signed as exits 260A (southbound) and 260B (northbound)
}}
{{WIint|exit
|type=concur
|mile=
|exit=261
|road={{Jct|state=WI|US|12|dir1=east|US|14|dir2=east|US|18|dir3=East|US-Alt|18|US-Alt|151}}
|notes=Northern end of US&nbsp;12&nbsp;/ US&nbsp;14&nbsp;/ US&nbsp;18 overlaps; Alternate US&nbsp;151&nbsp;/ Alternate US&nbsp;18 only signed southbound
}}
{{WIint|exit
|mile=
|espan=3
|road={{Jct|state=WI|WI|113|dir1=north|name1=First Street}}
}}
{{WIint
|mile=
|road={{Jct|state=WI|WI|30}}
}}
{{WIint
|mile=
|road={{Jct|state=WI|US|51|name1=Stoughton Road}}
}}
{{WIint|exit
|mile=
|exit=97
|road={{Jct|state=WI|I|39|I|90|I|94|city1=Milwaukee|location2=[[Chicago]]|city3=Wisconsin Dells}}
|notes=Signed as exits 97A (southbound) and 97B (northbound)
}}
{{WIint|exit
|mile=
|exit=98A
|road=Nelson Road
|notes=Exits combined southbound
|nspan=2
}}
{{WIint|exit
|mile=
|exit=98B
|road=American Parkway
|notes=none
}}
{{WIint|exit
|location=Sun Prairie
|lspan=4
|mile=
|exit=100
|road={{Jct|state=WI|CTH|C|name1=Reiner Road}}
}}
{{WIint|exit
|mile=
|exit=101
|road={{Jct|state=WI|US-Bus|151|dab1=Sun Prairie|name1=Main Street}}
|notes=US&nbsp;151&nbsp;Business only signed northbound
}}
{{WIint|exit
|mile=
|exit=102
|road={{Jct|state=WI|WI|19|name1=Windsor Street|city1=Waunakee|city2=Marshall|countydab2=Dane}}
}}
{{WIint|exit
|mile=
|exit=103
|road={{Jct|state=WI|US-Bus|151|dab1=Sun Prairie|CTH|N|name1=Bristol Street}}
|notes=US&nbsp;151&nbsp;Business only signed southbound
}}
{{WIint|exit
|town=Bristol
|ctdab=Dane
|mile=
|exit=108
|road={{Jct|state=WI|CTH|VV|city1=East Bristol}}
}}
{{WIint|exit
|town=York
|ctdab=Dane
|mile=
|exit=111
|road={{Jct|state=WI|CTH|V|city1=East Bristol}}
}}
{{WIint|exit
|county=Columbia
|cspan=2
|town=Columbus
|mile=
|exit=115
|road={{Jct|state=WI|US-Bus|151|dab1=Columbus|WI|73|city1=Columbus|city2=Marshall|countydab2=Dane}}
|notes=US&nbsp;151&nbsp;Business only signed northbound
}}
{{WIint|exit
|location=Columbus
|mile=
|exit=118
|road={{Jct|state=WI|WI|16|WI|60|city1=Columbus|city2=Portage|city3=Fall River}}
}}
{{WIint|exit
|county=Dodge
|cspan=9
|town=Elba
|mile=
|exit=120
|road={{Jct|state=WI|US-Bus|151|dab1=Columbus|WI|73|city1=Columbus|city2=Randolph}}
|notes=US&nbsp;151&nbsp;Business only signed southbound
}}
{{WIint|exit
|location=Beaver Dam
|lspan=6
|mile=
|exit=129
|road={{Jct|state=WI|US-Bus|151|dab1=Beaver Dam|CTH|D|city1=Beaver Dam}}
|notes=
}}
{{WIint|exit
|mile=
|exit=130
|road={{Jct|state=WI|CTH|G|city1=Lowell|city2=Beaver Dam}}
}}
{{WIint|exit
|mile=
|exit=132
|road={{Jct|state=WI|WI|33|city1=Beaver Dam|city2=Horicon}}
}}
{{WIint|exit
|type=incomplete
|mile=
|exit=134
|road=Industrial Drive
|notes=Northbound exit and southbound entrance only
}}
{{WIint|exit
|mile=
|exit=135
|road={{Jct|state=WI|US-Bus|151|dab1=Beaver Dam|CTH|B|city1=Beaver Dam|city2=Burnett}}
}}
{{WIint|exit
|mile=
|exit=136
|road={{Jct|state=WI|CTH|A|city1=Fox Lake}}
}}
{{WIint|exit
|town=Chester
|lspan=2
|type=incomplete
|mile=
|exit=142
|road={{Jct|state=WI|US-Bus|151|dab1=Waupun|CTH|M|city1=Waupun}}
|notes=Northbound exit and southbound entrance only
}}
{{WIint|exit
|mile=
|exit=144
|road={{Jct|state=WI|WI|26|city1=Waupun|city2=Juneau|city3=Watertown}}
}}
{{WIint|exit
|county1=Dodge
|county2=Fond du Lac
|location=Waupun
|type=concur
|mile=
|exit=146
|road={{Jct|state=WI|WI|49|I-Alt|41|dir2=south|city1=Waupun|city2=Brownsville}}
|notes=I-41 Alt follows WIS 49 east
}}
{{WIint|exit
|county=Fond du Lac
|cspan=8
|town=Waupun
|lspan=2
|type=concur
|mile=
|exit=147
|road={{Jct|state=WI|US-Bus|151|dab1=Waupun|WI|26|dir2=south|city1=Waupun}}
|notes=Southern end of WIS&nbsp;26 overlap; southbound exit and northbound entrance only
}}
{{WIint|exit
|type=concur
|mile=
|exit=148
|road={{Jct|state=WI|WI|26|dir1=north|city1=Rosendale|city2=Oshkosh}}
|notes=Northern end of WIS&nbsp;26 overlap
}}
{{WIint|exit
|town=Fond du Lac
|mile=
|exit=160
|road={{Jct|state=WI|CTH|D|name1= Military Road|city1=Oakfield}}
}}
{{WIint|exit
|location=Fond du Lac
|lspan=3
|type=concur
|mile=
|exit=161
|road={{Jct|state=WI|CTH|VVV|I-Alt|41|dir2=north|name1=Hickory Street}}
|notes=County VVV unsigned on exit ramps or exit signs; I-41 Alt follows CTH-VVV north
}}
{{WIint|exit
|mile=
|exit=162
|road={{Jct|state=WI|WI|175|dir1=south|name1=Main Street}}
}}
{{WIint|exit
|type=concur
|mile=
|exit=—
|road={{Jct|state=WI|I|41|US|41|US|45|dir3=north|city1=Oshkosh|city2=Green Bay|location3=[[Milwaukee]]}}
|notes=Southern end of US 45 overlap
}}
{{WIint|exit
|town=Fond du Lac
|type=concur
|mile=
|exit=164
|road={{Jct|state=WI|US|45|CTH|V|dir1=south|name1=Fond du Lac Avenue|city1=Eden}}
|notes=Northern end of US 45 overlap
}}
{{WIint|exit
|location=Fond du Lac
|mile=
|exit=168
|road={{Jct|state=WI|WI|23|name1=Johnson Street|city1=Sheboygan}}
}}
{{WIint|exit
|county=Calumet
|cspan=3
|town=Stockbridge
|mile=
|road={{Jct|state=WI|WI|55|dir1=north|city1=Sherwood|city2=Kaukauna}}
}}
{{WIint|exit
|location=Chilton
|lspan=2
|type=concur
|mile=
|espan=2
|road={{Jct|state=WI|WI|32|dir1=north|WI|57|dir2=north|name2=Madison Street|city1=Green Bay}}
|notes=Southern end of WIS&nbsp;32&nbsp;/ WIS&nbsp;57 overlap
}}
{{WIint
|type=concur
|mile=
|road={{Jct|state=WI|WI|32|dir1=south|WI|57|dir2=south|name2=E. Chestnut Street|location1=[[Milwaukee]]}}
|notes=Northern end of WIS&nbsp;32&nbsp;/ WIS&nbsp;57 overlap
}}
{{WIint|exit
|county=Manitowoc
|cspan=3
|town=Eaton
|mile=
|road={{Jct|state=WI|WI|67|dir1=south|city1=Kiel}}
}}
{{WIint|exit
|location=Manitowoc
|lspan=2
|type=concur
|mile=
|espan=2
|road={{Jct|state=WI|WI|42|dir1=south|city1=Howards Grove|city2=Osman}}
|notes=Southern end of WIS&nbsp;42 overlap
}}
{{WIint
|type=concur
|mile=
|road={{Jct|state=WI|I|43|WI|42|Tour|LMCT|dir2=north|city1=Green Bay|location2=[[Milwaukee]]}}
|notes=Northern end of WIS&nbsp;42 overlap
}}
{{Jctbtm|col=8|keys=concur,incomplete}}

==Related routes==
{{See also|Special routes of U.S. Route 151}}
*[[U.S. Route&nbsp;51]]

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

==References==
{{Reflist}}

==External links==
{{Commons category|U.S. Route 151}}
{{Attached KML}}
* [http://usends.com/151.html Endpoints of U.S. Highway 151]

{{US 18}}

[[Category:United States Numbered Highway System|51-1]]
[[Category:U.S. Highways in Iowa|51-1]]
[[Category:U.S. Highways in Wisconsin|51-1]]
[[Category:U.S. Route 51|1]]
[[Category:Transportation in Iowa County, Iowa]]
[[Category:Transportation in Benton County, Iowa]]
[[Category:Transportation in Linn County, Iowa]]
[[Category:Transportation in Jones County, Iowa]]
[[Category:Transportation in Dubuque County, Iowa]]
[[Category:Transportation in Grant County, Wisconsin]]
[[Category:Transportation in Lafayette County, Wisconsin]]
[[Category:Transportation in Iowa County, Wisconsin]]
[[Category:Transportation in Dane County, Wisconsin]]
[[Category:Transportation in Columbia County, Wisconsin]]
[[Category:Transportation in Dodge County, Wisconsin]]
[[Category:Transportation in Fond du Lac County, Wisconsin]]
[[Category:Transportation in Calumet County, Wisconsin]]
[[Category:Transportation in Manitowoc County, Wisconsin]]
[[Category:1926 establishments in the United States]]
[[Category:U.S. Highways in Illinois|51-1]]