.svg) U.S. Route 151 | ||||||||||
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 US 151 highlighted in red | ||||||||||
| Route information | ||||||||||
| Auxiliary route ofUS 51 | ||||||||||
| Length | 324 mi[1] (521 km) | |||||||||
| Existed | 1926–present | |||||||||
| Major junctions | ||||||||||
| South end |  I-80 nearWilliamsburg, IA | |||||||||
| Major intersections |
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| North end |   I-43 /WIS 42 inManitowoc, WI | |||||||||
| Location | ||||||||||
| Country | United States | |||||||||
| States | ||||||||||
| Counties | ||||||||||
| Highway system | ||||||||||
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U.S. Highway 151 (US 151) is aUnited States Numbered Highway that runs through the states ofIowa andWisconsin. The southern terminus for US 151 is at a junction withInterstate 80 (I-80) inIowa County, Iowa, and its northern terminus is atManitowoc, Wisconsin. The route, from south to north follows a northeasterly path through the two states.
US 151 is an important corridor which connectsCedar Rapids, Iowa toFond du Lac, Wisconsin with an expressway (except for a segment about ten miles where it uses arterial roads instead inMadison, Wisconsin).
Approximately seven miles (11 km) south ofDubuque, Iowa, US 151 joins withUS 61. The two highways share a route from there toDickeyville, Wisconsin. Five miles (8.0 km) south of Dubuque, US 61/US 151 joins withUS 52 and shares a route with US 52 until it veers south inKey West.
In Wisconsin, US 61/US 151 joins withWisconsin Highway 35 (WIS 35) about one mile (1.6 km) north of the Iowa–Wisconsin border. At Dickeyville, US 151 splits off and heads northeast toPlatteville. US 61/WIS 35 continues north. US 151 later joins withUS 18 nearDodgeville. The two highways share a route all the way toMadison.
US 151 begins at exit 225 alongI-80 in ruralIowa County north ofWilliamsburg. The highway heads to the north and intersectsUS 6 outside ofHomestead, Iowa. US 151 turns east onto US 6 and the two routesrun concurrently for about two miles (3 km) until US 6 splits to the east at Homestead. US 151 continues to the north and crosses theIowa River on its way to Amana, the main village of theAmana Colonies and the eastern end ofIowa Highway 220 (Iowa 220).[2] The road clips the southeastern corner ofBenton County, Iowa atWalford and it turns to the northeast towardFairfax. When it reaches theUS 30 /US 218 freeway inCedar Rapids, US 151 turns east onto the highway whileUS 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,I-380, and C Street SW. Just east of theCedar River, US 151 exits from US 30, which continues east towardClinton.
The route splits from the other roads and continues towardDubuque as anexpressway. This 65-mile (105 km) stretch crosses many major rivers including both theWapsipinicon and theMaquoketa. The road eventually goes into theDriftless Area where it meets up with US 61 around theDubuque Regional Airport.[3] US 52 briefly joins the two routes, concurrently, for two miles south of Dubuque. The combined road then heads into the state ofWisconsin.[4]
US 61/US 151 crosses theMississippi River into Wisconsin via theDubuque-Wisconsin Bridge from Dubuque, Iowa and passes through a cut in the river ridge before turning northward to the western terminus ofWIS 11 after one mile (1.6 km) of due east travel.WIS 35 and theGreat 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 151 from the left side of the road. The limited access portion ends at this interchange. Another pair of halfdiamond interchanges connect the highway with County Trunk Highway HHH (CTH-HHH) and CTH-H as it bypassesKieler to the northwest. AtDickeyville, US 61, WIS 35 and the Great River Road route exit north off of US 151 into town. US 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 one-mile (1.6 km) stretch before climbing back onto the ridge top on the other side of the valley.[5] US 151 then approachesPlatteville and enters a section of limited access at CTH-D (US 151 Business). The limited access stretch ends after three interchanges six miles (9.7 km) to the east. The last of the interchanges isWIS 126/CTH-G with access toBelmont. 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 passingMineral Point[6] and another two while passing the city.[7]
The highway is limited access between the two interchanges that provide access to Mineral Point: CTH-O andWIS 23. WIS 23 joins US 151 heading northbound at that point until the first interchange at Dodgeville. This interchange begins another short stretch of freeway to the point whereUS 18 joins the route. US 18/US 151 heads eastbound past that interchange.[7]
The section of expressway past Dodgeville passesRidgeway andBarneveld. 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.[8] Access to Barneveld is at an interchange with CTH-ID and an at-grade intersection with CTH-K. CTH-ID parallels US 18/US 151 for the entire stretch between Barneveld andMount Horeb. A section of freeway begins atWIS 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 bypassesVerona to the south. This section provides access to four interchanges including the two endpoints of CTH-MV. The freeway continues intoFitchburg 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 18 and US 151 merge east on the West Beltline Highway—joiningUS 12 andUS 14.[7]
The four US Highways run concurrently for about three miles (4.8 km) to Park Street.[9] At this interchange, US 14 turns south off the beltline towardsOregon, and US 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 151 turns northeast onto West Washington Avenue for about 1,500 feet (460 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 theMonona Terrace Convention Center as it passes to the south and east of downtown Madison. US 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 theMadison Isthmus, and leading out of the city to the east. The western terminus ofWIS 30 meets US 151 about three miles (4.8 km) northeast of the South Blair Street turn,[10] and US 51 crosses US 151 one mile (1.6 km) further northeast.[7]
At acloverleaf interchange withI-39/I-90/I-94, a section of freeway begins and continues along US 151 northeast through commercial zones into residential areas. A highway bypass was constructed north and west ofSun 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 151 passes through farmland, heading towardColumbus. The highway bypasses the city via a partial beltline to the north and east, completely clearing the city.WIS 16 andWIS 60 crosses under US 151 about midway along the Columbus bypass. US 151 becomes an expressway with level intersections after the interchange withWIS 73 at the end of the bypass portion. The route becomes a freeway atBeaver 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 151 crosses at-grade intersections after the interchange with CTH-A northeast of Beaver Dam and encounters one more freeway section atWaupun, bypassing the city to the east. The four-lane expressway of US 151 continues east, bypassingFond du Lac to the south and east. This expressway provides a mixture of at-grade intersections and grade-separated interchanges atI-41/US& 41 and WIS 23.[7] WisDOT currently is studying changes to two sections of US 151. The first study would preserve the Fond du Lac Bypass from I-41 to WIS 23, with the ultimate goal being freeway conversion.[11] The second study is examining freeway conversions to the route from WIS 73 in Columbus to WIS 49 in Waupun.[12]
The multi-lane section of US 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 151 then turns east at the intersection withWIS 55 and follows two-lane surface roads and briefly running concurrently withWIS 32 andWIS 57 inChilton. The roadway passes through farmland throughout this section until it picks upWIS 42 just outside of Manitowoc and ends atI-43 while WIS 42 continues east into Manitowoc.
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 U.S. Highway 118 | |
|---|---|
| Location | Dodgeville toDickeyville, Wisconsin |
| Existed | 1926–1934 |
US 151 was one of the original U.S. Highways from 1926. At the time, it only ran fromFond du Lac, Wisconsin, to Madison. In 1934, the highway was extended southwest toCedar Rapids, Iowa, incorporating the full length of formerU.S. Highway 118 (Dodgeville toDickeyville) and part of formerU.S. Highway 161 (Dubuque toCedar Rapids; US 161 from Cedar Rapids south toKeokuk became US 218). At the time, the southern end of the route was at Williams Blvd SW and 16th Ave SW, what was then US 30 and US 218. In the 1940s, the highway was extended northeast to Manitowoc.
In 1969, theEagle Point Bridge, which connected US 151 and US 61 with Wisconsin, was closed, and those highways were rerouted over theJulien Dubuque Bridge withUS 20 from Dubuque toEast Dubuque, Illinois. The route then followedIllinois Route 35 andWIS 35 north to what is now the current highway. In 1982, theDubuque-Wisconsin Bridge opened, the old Eagle Point Bridge was demolished, and US 151 and US 61 were rerouted onto the new bridge. This is the only instance of US 61 and US 151 entering Illinois.
In 1981, the southern terminus of the highway was extended once again when the US 30 bypass was built. The southern terminus was at the US 151 and 30 interchange. By 1986, the main US 151 was rerouted onto state highway 13 and US 30 to bypass Cedar Rapids. The previous route through Cedar Rapids was renamed US 151 Business (though the official state designation for it isIowa 922). Finally, in 1989, US 151 was extended to its current southern end at exit 225 along I-80. This extension followed the old route ofIowa 149. As a result, US 151 became the main route through theAmana 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.
 | This sectionis missing mileposts for junctions. Please helpadd them. |
| State | County | Location | mi[13] | km | Exit | Destinations | Notes | |
|---|---|---|---|---|---|---|---|---|
| Iowa | Iowa | Iowa Township | 0.000 | 0.000 |   I-80 / CR W21 south –Davenport,Des Moines | |||
| 5.646 | 9.086 |   US 6 west –Marengo | Southern end of US 6 overlap | |||||
| Amana Colonies | 7.588 | 12.212 |  US 6 east –Coralville | Northern end of US 6 overlap | ||||
| 10.502 | 16.901 |  Iowa 220 west –High Amana,Middle Amana,East Amana | ||||||
| Benton | No major junctions | |||||||
| Linn | Cedar Rapids | 24.364– 24.787 | 39.210– 39.891 | 248 |      US 30 west /US 218 north /US 151 Bus. north (Williams Boulevard SW) –Cedar Rapids,Tama | Southern end of US 30 and US 218 overlaps | ||
| 26.121 | 42.038 | 250 | Edgewood Road SW | |||||
| 28.008 | 45.075 | 252A | 6th Street SW | Former US 218 | ||||
| 28.342 | 45.612 | 252B-C |      I-380 /US 218 south /Iowa 27 –Cedar Rapids,Iowa City,Airport | Northern end of US 218 overlap; signed as exits 252B (southbound) and 252C (northbound) | ||||
| 29.019 | 46.702 | 253 | Bowling Street SW, Kirkwood Boulevard SW | |||||
| 30.017 | 48.308 | 254 |  CR W6E (C Street SW) –Ely | |||||
| Bertram Township | 34.955– 35.416 | 56.255– 56.997 | 259 |   US 30 east /Iowa 13 begins –Mount Vernon | Northern end of US 30 overlap; southern end of Iowa 13 overlap | |||
| 39.007 | 62.776 |   Lincoln Highway Heritage Byway / CR E48 (Mount Vernon Road) | Former US 30 | |||||
| Marion | 42.030 | 67.641 |   Iowa 100 west / CR E45 –Marion | |||||
| 43.120 | 69.395 | US 151 Bus. south /Iowa 13 north – Marion,Central City | Northern end of Iowa 13 overlap | |||||
| Jones | Fairview | 54.640 | 87.935 | 49 |   Iowa 1 south / CR E34 –Martelle, Mount Vernon | Former US 151 | ||
| Anamosa | 59.725 | 96.118 | 54 |   Iowa 64 east / CR E28 –Anamosa | ||||
| 60.674 | 97.645 | Old Dubuque Road | Former US 151 | |||||
| Monticello | 68.432 | 110.131 | 63 |  US 151 Bus. / CR X44 –Monticello | US 151 Business only signed northbound | |||
| 70.649 | 113.699 | 65 |  Iowa 38 –Monticello,Hopkinton | |||||
| Lovell Township | 72.566 | 116.784 | US 151 Bus. – Monticello | US 151 Business only signed southbound | ||||
| Richland Township | 79.454 | 127.869 | US 151 Bus. –Cascade | US 151 Business only signed northbound | ||||
| Dubuque | Cascade | 80.687 | 129.853 | 75 |  Iowa 136 –Cascade,Dyersville | |||
| 82.210 | 132.304 | 77 | US 151 Bus. – Cascade,Farley | US 151 Business only signed southbound | ||||
| Table Mound Township | 98.361 | 158.297 | Military Road | Former US 151 | ||||
| 99.962– 100.580 | 160.873– 161.868 | — |  US 61 south –Maquoketa | Southern end of US 61 overlap | ||||
| 101.097 | 162.700 | 184 |  US 52 north –Peosta,Waterloo | Southern end of US 52 overlap | ||||
| Dubuque | 102.698 | 165.276 | Maquoketa Drive | Former US 61 / US 151 | ||||
| 103.114 | 165.946 | — |   US 52 south /Great River Road south –Bellevue | Northern end of US 52 overlap; southern end of Great River Road overlap | ||||
| 104.447 | 168.091 | 187 | Grandview Avenue | |||||
| 104.743– 104.987 | 168.568– 168.960 | 188 |   ToUS 20 (Locust Street) | Northbound exit and southbound entrance only | ||||
| 105.756 | 170.198 | — | ToUS 20 (Locust Street Connector) | |||||
| 106.024 | 170.629 | 189A | White Street / Port of Dubuque | Northbound exit and southbound entrance only | ||||
| 106.407– 106.551 | 171.245– 171.477 | 189B |  9th Street / 11th Street /Great River Road north | Former US 52 /Iowa 3; northern end of Great River Road overlap | ||||
| 107.188– 107.899 | 172.502– 173.647 | 190 | Kerper Boulevard / Eagle Point District | Former US 61 / US 151 | ||||
| Mississippi River | 108.151 0 | 174.052 0.0 | Dubuque–Wisconsin Bridge; Iowa–Wisconsin state line | |||||
| Wisconsin | Grant | Town of Jamestown | 1 |   WIS 11 west /WIS 35 south /Great River Road south –Janesville,East Dubuque | Southern end of WIS 35 overlap | |||
| 2 | Badger Road, Eagle Point Road | Northbound exit and southbound entrance only | ||||||
| 3 | Badger Road, Eagle Point Road | Southbound exit and northbound entrance only; Old U.S. 151 | ||||||
| Kieler | 5 |   CTH-HHH to CTH-H –Kieler,Louisburg | ||||||
| CTH-H to CTH-HHH –Kieler,Louisburg | ||||||||
| Dickeyville | 8 |  US 61 north /WIS 35 north /Great River Road north / CTH-HH –Dickeyville,Lancaster | Northern end of US 61 and WIS 35 overlaps | |||||
| Town of Platteville | 18 |   Bus. US 151 / CTH-D –Platteville | US 151 Business only signed northbound; exit forUW-Platteville | |||||
| Platteville | 19 |   WIS 80 /WIS 81 –Platteville,Darlington,Lancaster | ||||||
| 21 |  Bus. US 151 / CTH-XX –Platteville | US 151 Business only signed southbound | ||||||
| Lafayette | Belmont | 26 |   WIS 126 south / CTH-G –Belmont,Rewey | |||||
| Iowa | Town of Mineral Point | 37 |  Bus. US 151 / CTH-O –Mineral Point | US 151 Business only signed northbound | ||||
| Mineral Point | 40 |   Bus. US 151 south toWIS 23 /WIS 39 –Mineral Point,Darlington,Hollandale | US 151 Business only signed southbound; Southern end of WIS 23 overlap | |||||
| Town of Dodgeville | 44 | WIS 23 north –Dodgeville,Spring Green,Wisconsin Dells | Northern end of WIS 23 overlap | |||||
| 47 |  US 18 west –Dodgeville,Prairie du Chien | Southern end of US 18 overlap | ||||||
| Town of Ridgeway | 52 |  CTH-BB south (Ridgevue Road) / CTH-HHH –Ridgeway | ||||||
| Barneveld | 58 |  CTH-ID west –Blue Mounds,Arena | ||||||
| Dane | Town of Blue Mounds | 65 |  Bus. US 18 /Bus. US 151 /WIS 78 –Mount Horeb,Blanchardville | US 18 Business / US 151 Business only signed northbound | ||||
| Mount Horeb | 69 | Bus. US 18 /Bus. US 151 / CTH-ID –Mount Horeb | US 18 Business / US 151 Business only signed southbound | |||||
| Town of Springdale | 70 |   CTH-PD to CTH-P –Cross Plains | ||||||
| Town of Verona | 75 | CTH-G (Dairy Ridge Road) –Mount Vernon | ||||||
| Verona | 76 |  Bus. US 18 /Bus. US 151 / CTH-MV (W. Verona Avenue) / Epic Lane | US 18 Business / US 151 Business only signed northbound | |||||
| 77 |  WIS 69 –Belleville,Monroe | |||||||
| 79 |    CTH-PB to CTH-M /Alt. US 18 /Alt. US 151 –Paoli,Oregon | Alternate US 151 / Alternate US 18 only signed northbound | ||||||
| Town of Verona | 81 | Bus. US 18 (E. Verona Avenue) /Bus. US 151 / CTH-MV –Verona | Southbound exit and northbound entrance only | |||||
| Fitchburg | 83A | CTH-PD (McKee Road) | ||||||
| 83B | Williamsburg Way | |||||||
| Madison | 258 |   US 12 west /US 14 west –Baraboo,La Crosse | Southern end of US 12 / US 14 overlap | |||||
| 258A | Seminole Highway | Southbound exit and northbound entrance only | ||||||
| 259 | Todd Drive | |||||||
| 260 | CTH-D (Fish Hatchery Road) –Fitchburg | Signed as exits 260A (southbound) and 260B (northbound) | ||||||
| 261 | US 12 east /US 14 east /US 18 east /Alt. US 18 /Alt. US 151 | Northern end of US 12 / US 14 / US 18 overlaps; Alternate US 151 / Alternate US 18 only signed southbound | ||||||
 WIS 113 north (First Street) | ||||||||
 WIS 30 | ||||||||
 US 51 (Stoughton Road) | ||||||||
| 97 |    I-39 /I-90 /I-94 –Milwaukee,Chicago,Wisconsin Dells | Signed as exits 97A (southbound) and 97B (northbound) | ||||||
| 98A | Nelson Road | Exits combined southbound | ||||||
| 98B | American Parkway | |||||||
| Sun Prairie | 100 |  CTH-C (Reiner Road) | ||||||
| 101 | Bus. US 151 (Main Street) | US 151 Business only signed northbound | ||||||
| 102 |  WIS 19 (Windsor Street) –Waunakee,Marshall | |||||||
| 103 |  Bus. US 151 (Bristol Street) / CTH-N | US 151 Business only signed southbound | ||||||
| Town of Bristol | 108 |  CTH-VV –East Bristol | ||||||
| Town of York | 111 |  CTH-V –East Bristol | ||||||
| Columbia | Town of Columbus | 115 |  Bus. US 151 /WIS 73 –Columbus,Marshall | US 151 Business only signed northbound | ||||
| Columbus | 118 |   WIS 16 /WIS 60 –Columbus,Portage,Fall River | ||||||
| Dodge | Town of Elba | 120 | Bus. US 151 /WIS 73 –Columbus,Randolph | US 151 Business only signed southbound | ||||
| Beaver Dam | 129 | Bus. US 151 / CTH-D –Beaver Dam | ||||||
| 130 | CTH-G –Lowell,Beaver Dam | |||||||
| 132 |  WIS 33 –Beaver Dam,Horicon | |||||||
| 134 | Industrial Drive | Northbound exit and southbound entrance only | ||||||
| 135 |  Bus. US 151 / CTH-B –Beaver Dam,Burnett | |||||||
| 136 |  CTH-A –Fox Lake | |||||||
| Town of Chester | 142 | Bus. US 151 / CTH-M –Waupun | Northbound exit and southbound entrance only | |||||
| 144 |  WIS 26 –Waupun,Juneau,Watertown | |||||||
| Dodge–Fond du Lac county line | Waupun | 146 |     WIS 49 /Alt. I-41 south –Waupun,Brownsville | I-41 Alt follows WIS 49 east | ||||
| Fond du Lac | Town of Waupun | 147 | Bus. US 151 /WIS 26 south –Waupun | Southern end of WIS 26 overlap; southbound exit and northbound entrance only | ||||
| 148 | WIS 26 north –Rosendale,Oshkosh | Northern end of WIS 26 overlap | ||||||
| Town of Fond du Lac | 160 | CTH-D (Military Road) –Oakfield | ||||||
| Fond du Lac | 161 |   CTH-VVV (Hickory Street) /Alt. I-41 north | County VVV unsigned on exit ramps or exit signs; I-41 Alt follows CTH-VVV north | |||||
| 162 |  WIS 175 south (Main Street) | |||||||
| — |   I-41 /US 41 /US 45 north –Oshkosh,Green Bay,Milwaukee | Southern end of US 45 overlap | ||||||
| Town of Fond du Lac | 164 | US 45 south (Fond du Lac Avenue) / CTH-V –Eden | Northern end of US 45 overlap | |||||
| Fond du Lac | 168 | WIS 23 (Johnson Street) –Sheboygan | ||||||
| Calumet | Town of Stockbridge |  WIS 55 north –Sherwood,Kaukauna | ||||||
| Chilton |   WIS 32 north /WIS 57 north (Madison Street) –Green Bay | Southern end of WIS 32 / WIS 57 overlap | ||||||
| WIS 32 south /WIS 57 south (E. Chestnut Street) –Milwaukee | Northern end of WIS 32 / WIS 57 overlap | |||||||
| Manitowoc | Town of Eaton |  WIS 67 south –Kiel | ||||||
| Manitowoc | WIS 42 south –Howards Grove,Osman | Southern end of WIS 42 overlap | ||||||
 I-43 /WIS 42 north /LMCT –Green Bay,Milwaukee | Northern end of WIS 42 overlap | |||||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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