<P> Another problem for travelers hoping to avoid the construction on I - 80 was the lack of east--west, four - lane highways in Iowa . At the time, the nearest interstates, I - 70 and I - 90 were far across state lines in Missouri and Minnesota, respectively . One traveler, interviewed by The Des Moines Register, who was traveling back to Iowa from New York, sought to avoid I - 80's construction woes entirely by driving through Canada . </P> <Table> <Tr> <Th> County </Th> <Th> Location </Th> <Th> mi </Th> <Th> km </Th> <Th> Exit </Th> <Th> Destinations </Th> <Th> Notes </Th> </Tr> <Tr> <Td_colspan="2"> Missouri River </Td> <Th> 0.000 </Th> <Td> 0.000 </Td> <Td> </Td> <Td_colspan="1"> I - 80 west--Omaha </Td> <Td> Continuation into Nebraska </Td> </Tr> <Tr> <Td_colspan="3"> Interstate 80 Bridge; Nebraska--Iowa state line </Td> </Tr> <Tr> <Td> Pottawattamie </Td> <Td> Council Bluffs </Td> <Th> 0.719 </Th> <Td> 1.157 </Td> <Td> </Td> <Td_colspan="1"> I - 29 north / US 6 west / S. 24th Street--Sioux City </Td> <Td> Western end of I - 29 and US 6 overlaps; S. 24th Street not signed westbound </Td> </Tr> <Tr> <Th> 1.680 </Th> <Td> 2.704 </Td> <Td> 1B </Td> <Td_colspan="1"> S. 24th Street--Council Bluffs, Mid-America Center </Td> <Td> Eastbound access via exit 1 and southbound I - 29 </Td> </Tr> <Tr> <Th> 3.133 </Th> <Td> 5.042 </Td> <Td> </Td> <Td_colspan="1"> South Expressway--Council Bluffs, Business District, Lake Manawa </Td> <Td> Former Iowa 192 north </Td> </Tr> <Tr> <Th> 3.837 </Th> <Td> 6.175 </Td> <Td> </Td> <Td_colspan="1"> I - 29 south--Kansas City </Td> <Td> Eastern end of I - 29 overlap </Td> </Tr> <Tr> <Th> 5.174 </Th> <Td> 8.327 </Td> <Td> 5 </Td> <Td_colspan="1"> Madison Avenue--Council Bluffs </Td> <Td> </Td> </Tr> <Tr> <Th> 8.548 </Th> <Td> 13.757 </Td> <Td> 8 </Td> <Td_colspan="1"> US 6 east--Oakland, Council Bluffs </Td> <Td> Eastern end of US 6 overlap </Td> </Tr> <Tr> <Td> Underwood </Td> <Th> 17.540 </Th> <Td> 28.228 </Td> <Td> 17 </Td> <Td_colspan="1"> CR G30--Underwood </Td> <Td> </Td> </Tr> <Tr> <Td> Neola </Td> <Th> 23.228 </Th> <Td> 37.382 </Td> <Td> 23 </Td> <Td_colspan="1"> CR L55--Neola </Td> <Td> </Td> </Tr> <Tr> <Td> Minden Township </Td> <Th> 27.520 </Th> <Td> 44.289 </Td> <Td> 27 </Td> <Td_colspan="1"> I - 680 west--North Omaha, Sioux City </Td> <Td> </Td> </Tr> <Tr> <Th> 29.504 </Th> <Td> 47.482 </Td> <Td> 29 </Td> <Td_colspan="1"> CR L66--Minden </Td> <Td> </Td> </Tr> <Tr> <Td> Shelby </Td> <Th> 34.451 </Th> <Td> 55.444 </Td> <Td> 34 </Td> <Td_colspan="1"> CR M16--Shelby </Td> <Td> </Td> </Tr> <Tr> <Td> Avoca </Td> <Th> 40.404 </Th> <Td> 65.024 </Td> <Td> 40 </Td> <Td_colspan="1"> US 59--Avoca, Harlan </Td> <Td> </Td> </Tr> <Tr> <Td> Walnut </Td> <Th> 46.341 </Th> <Td> 74.579 </Td> <Td> 46 </Td> <Td_colspan="1"> CR M47 (Antique City Drive)--Walnut </Td> <Td> </Td> </Tr> <Tr> <Td> Cass </Td> <Td> Brighton Township </Td> <Th> 51.750 </Th> <Td> 83.284 </Td> <Td> 51 </Td> <Td_colspan="1"> CR M56--Marne </Td> <Td> </Td> </Tr> <Tr> <Th> 54.762 </Th> <Td> 88.131 </Td> <Td> 54 </Td> <Td_colspan="1"> Iowa 173--Atlantic, Elk Horn, Kimballton </Td> <Td> </Td> </Tr> <Tr> <Td> Pymosa Township </Td> <Th> 57.697 </Th> <Td> 92.854 </Td> <Td> 57 </Td> <Td_colspan="1"> CR N16--Atlantic </Td> <Td> </Td> </Tr> <Tr> <Th> 60.708 </Th> <Td> 97.700 </Td> <Td> 60 </Td> <Td_colspan="1"> US 6 west / US 71--Audubon, Villisca, Atlantic </Td> <Td> Western end of US 6 overlap </Td> </Tr> <Tr> <Td> Benton Township </Td> <Th> 64.694 </Th> <Td> 104.115 </Td> <Td> 64 </Td> <Td_colspan="1"> CR N28--Wiota </Td> <Td> </Td> </Tr> <Tr> <Td> Grant Township </Td> <Th> 70.426 </Th> <Td> 113.340 </Td> <Td> 70 </Td> <Td_colspan="1"> Iowa 148 south--Anita, Corning, Exira </Td> <Td> </Td> </Tr> <Tr> <Td> Adair </Td> <Td> Adair </Td> <Th> 75.688 </Th> <Td> 121.808 </Td> <Td> 75 </Td> <Td_colspan="1"> CR G30 (White Pole Road) </Td> <Td> </Td> </Tr> <Tr> <Th> 76.427 </Th> <Td> 122.997 </Td> <Td> 76 </Td> <Td_colspan="1"> CR N54 south--Adair </Td> <Td> </Td> </Tr> <Tr> <Td> Casey </Td> <Th> 82.585 </Th> <Td> 132.908 </Td> <Td> 83 </Td> <Td_colspan="1"> CR N77 (Antique Country Drive)--Casey </Td> <Td> </Td> </Tr> <Tr> <Td> Jefferson Township </Td> <Th> 86.357 </Th> <Td> 138.978 </Td> <Td> 86 </Td> <Td_colspan="1"> Iowa 25--Guthrie Center, Greenfield </Td> <Td> </Td> </Tr> <Tr> <Th> 88.346 </Th> <Td> 142.179 </Td> <Td> 88 </Td> <Td_colspan="1"> CR P20--Menlo </Td> <Td> </Td> </Tr> <Tr> <Td> Stuart </Td> <Th> 93.396 </Th> <Td> 150.306 </Td> <Td> 93 </Td> <Td_colspan="1"> CR P28--Stuart, Panora </Td> <Td> </Td> </Tr> <Tr> <Td> Lincoln Township </Td> <Th> 97.387 </Th> <Td> 156.729 </Td> <Td> 97 </Td> <Td_colspan="1"> CR P48--Dexter </Td> <Td> </Td> </Tr> <Tr> <Td> Madison </Td> <Td_colspan="8"> No major junctions </Td> </Tr> <Tr> <Td> Dallas </Td> <Td> Dexter </Td> <Th> 100.293 </Th> <Td> 161.406 </Td> <Td> 100 </Td> <Td_colspan="1"> CR F60--Redfield, Dexter </Td> <Td> Former US 6 </Td> </Tr> <Tr> <Td> Adams Township </Td> <Th> 104.170 </Th> <Td> 167.645 </Td> <Td> 104 </Td> <Td_colspan="1"> CR P57--Earlham </Td> <Td> </Td> </Tr> <Tr> <Th> 106.566 </Th> <Td> 171.501 </Td> <Td> 106 </Td> <Td_colspan="1"> CR P58 / CR F90 </Td> <Td> </Td> </Tr> <Tr> <Td> De Soto </Td> <Th> 110.255 </Th> <Td> 177.438 </Td> <Td> 110 </Td> <Td_colspan="1"> US 6 east / US 169--Adel, Winterset </Td> <Td> Eastern end of US 6 overlap </Td> </Tr> <Tr> <Td> Van Meter </Td> <Th> 113.363 </Th> <Td> 182.440 </Td> <Td> 113 </Td> <Td_colspan="1"> CR R16--Van Meter, Dallas Center </Td> <Td> </Td> </Tr> <Tr> <Td> Waukee </Td> <Th> 117.282 </Th> <Td> 188.747 </Td> <Td> 117 </Td> <Td_colspan="1"> CR R22--Waukee, Booneville </Td> <Td> </Td> </Tr> <Tr> <Th> 118.771 </Th> <Td> 191.143 </Td> <Td> 118 </Td> <Td_colspan="1"> Grand Prairie Parkway--Waukee </Td> <Td> Diverging diamond interchange </Td> </Tr> <Tr> <Td> West Des Moines </Td> <Th> 121.562 </Th> <Td> 195.635 </Td> <Td> 121 </Td> <Td_colspan="1"> Jordan Creek Parkway--West Des Moines </Td> <Td> </Td> </Tr> <Tr> <Th> 122.517 </Th> <Td> 197.172 </Td> <Td> 122 </Td> <Td_colspan="1"> 60th Street--West Des Moines </Td> <Td> Eastbound exit and westbound entrance only </Td> </Tr> <Tr> <Td> Polk </Td> <Th> 123.205 </Th> <Td> 198.279 </Td> <Td> 123A </Td> <Td_colspan="1"> I - 235 east--Des Moines </Td> <Td> Signed as I - 35 exit 72A westbound </Td> </Tr> <Tr> <Td> 123B </Td> <Td_colspan="1"> I - 35 south--Kansas City </Td> <Td> Western end of I - 35 overlap; no exit number westbound; serves Des Moines International Airport; I - 35 exit 72B </Td> </Tr> <Tr> <Th> 123.773 </Th> <Td> 199.193 </Td> <Td> 124 </Td> <Td_colspan="1"> University Avenue--Clive </Td> <Td> </Td> </Tr> <Tr> <Td> Clive </Td> <Th> 124.770 </Th> <Td> 200.798 </Td> <Td> 125 </Td> <Td_colspan="1"> US 6 (Hickman Road)--Adel </Td> <Td> </Td> </Tr> <Tr> <Td> Urbandale </Td> <Th> 125.777 </Th> <Td> 202.418 </Td> <Td> 126 </Td> <Td_colspan="1"> Douglas Avenue--Urbandale </Td> <Td> </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> </Td> <Td_colspan="1"> Meredith Drive </Td> <Td> Future half diamond interchange </Td> </Tr> <Tr> <Th> 127.174 </Th> <Td> 204.667 </Td> <Td> 127 </Td> <Td_colspan="1"> Iowa 141 west--Urbandale, Grimes </Td> <Td> </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> </Td> <Td_colspan="1"> 100th Street </Td> <Td> Future diamond interchange </Td> </Tr> <Tr> <Th> 129.150 </Th> <Td> 207.847 </Td> <Td> 129 </Td> <Td_colspan="1"> NW 86th Street--Camp Dodge </Td> <Td> </Td> </Tr> <Tr> <Td> Johnston </Td> <Th> 131.158 </Th> <Td> 211.078 </Td> <Td> 131 </Td> <Td_colspan="1"> Iowa 28 south (Merle Hay Road)--Saylorville Lake </Td> <Td> </Td> </Tr> <Tr> <Td> Saylor Township </Td> <Th> 134.949 </Th> <Td> 217.179 </Td> <Td> 135 </Td> <Td_colspan="1"> Iowa 415 (2nd Avenue)--Polk City </Td> <Td> </Td> </Tr> <Tr> <Th> 136.197 </Th> <Td> 219.188 </Td> <Td> 136 </Td> <Td_colspan="1"> US 69 (East 14th Street)--Ankeny </Td> <Td> </Td> </Tr> <Tr> <Td> Ankeny </Td> <Th> 137.490 </Th> <Td> 221.269 </Td> <Td> 137 </Td> <Td_colspan="1"> I - 35 north / I - 235 west--Des Moines, Minneapolis </Td> <Td> Eastern end of I - 35 overlap; signed as exits 137A (I - 235, left exit WB) and 137B (I - 35, left exit EB) </Td> </Tr> <Tr> <Td> Altoona </Td> <Th> 140.336 </Th> <Td> 225.849 </Td> <Td> 141 </Td> <Td_colspan="1"> US 65 south--Altoona, Des Moines, Pleasant Hill </Td> <Td> Western end of US 65 overlap; US 65 exit 84; serves Des Moines International Airport </Td> </Tr> <Tr> <Th> 141.733 </Th> <Td> 228.097 </Td> <Td> 142 </Td> <Td_colspan="1"> US 6 west / US 65 north / Iowa 330 north--Bondurant, Marshalltown </Td> <Td> Eastern end of US 65 overlap; western end of US 6 overlap </Td> </Tr> <Tr> <Td> Altoona--Bondurant line </Td> <Th> 143.375 </Th> <Td> 230.740 </Td> <Td> 143 </Td> <Td_colspan="1"> Bondurant, Altoona </Td> <Td> </Td> </Tr> <Tr> <Td> Mitchellville </Td> <Th> 148.511 </Th> <Td> 239.005 </Td> <Td> 149 </Td> <Td_colspan="1"> Mitchellville </Td> <Td> </Td> </Tr> <Tr> <Td> Jasper </Td> <Td> Colfax </Td> <Th> 154.862 </Th> <Td> 249.226 </Td> <Td> 155 </Td> <Td_colspan="1"> Iowa 117--Mingo, Colfax </Td> <Td> </Td> </Tr> <Tr> <Td> Sherman Township </Td> <Th> 158.535 </Th> <Td> 255.137 </Td> <Td> 159 </Td> <Td_colspan="1"> CR F48--Baxter </Td> <Td> </Td> </Tr> <Tr> <Td> Newton </Td> <Th> 163.969 </Th> <Td> 263.883 </Td> <Td> 164 </Td> <Td_colspan="1"> US 6 east / Iowa 14--Newton, Monroe </Td> <Td> Eastern end of US 6 overlap </Td> </Tr> <Tr> <Th> 167.965 </Th> <Td> 270.313 </Td> <Td> 168 </Td> <Td_colspan="1"> Iowa Speedway Drive--Newton </Td> <Td> </Td> </Tr> <Tr> <Td> Buena Vista Township </Td> <Th> 172.996 </Th> <Td> 278.410 </Td> <Td> 173 </Td> <Td_colspan="1"> Iowa 224 north--Sully, Kellogg </Td> <Td> </Td> </Tr> <Tr> <Td> Rock Creek Township </Td> <Th> 178.733 </Th> <Td> 287.643 </Td> <Td> 179 </Td> <Td_colspan="1"> Lynnville, Oakland Acres </Td> <Td> </Td> </Tr> <Tr> <Td> Poweshiek </Td> <Td> Grinnell </Td> <Th> 182.169 </Th> <Td> 293.173 </Td> <Td> 182 </Td> <Td_colspan="1"> Iowa 146--Grinnell, New Sharon </Td> <Td> </Td> </Tr> <Tr> <Td> Montezuma </Td> <Th> 191.311 </Th> <Td> 307.885 </Td> <Td> 191 </Td> <Td_colspan="1"> US 63--Montezuma, Tama </Td> <Td> </Td> </Tr> <Tr> <Td> Bear Creek Township </Td> <Th> 196.852 </Th> <Td> 316.803 </Td> <Td> 197 </Td> <Td_colspan="1"> Brooklyn </Td> <Td> </Td> </Tr> <Tr> <Td> Warren Township </Td> <Th> 201.375 </Th> <Td> 324.082 </Td> <Td> 201 </Td> <Td_colspan="1"> Iowa 21--Belle Plaine, What Cheer </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa </Td> <Td> Hartford Township </Td> <Th> 205.421 </Th> <Td> 330.593 </Td> <Td> 205 </Td> <Td_colspan="1"> Victor </Td> <Td> </Td> </Tr> <Tr> <Td> Sumner Township </Td> <Th> 211.474 </Th> <Td> 340.334 </Td> <Td> 211 </Td> <Td_colspan="1"> Millersburg, Ladora </Td> <Td> </Td> </Tr> <Tr> <Th> 216.483 </Th> <Td> 348.396 </Td> <Td> 216 </Td> <Td_colspan="1"> Marengo, North English </Td> <Td> </Td> </Tr> <Tr> <Td> Williamsburg </Td> <Th> 219.491 </Th> <Td> 353.237 </Td> <Td> 220 </Td> <Td_colspan="1"> Iowa 149 south / CR V77 north--Williamsburg, Parnell </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa Township </Td> <Th> 224.518 </Th> <Td> 361.327 </Td> <Td> 225 </Td> <Td_colspan="1"> US 151 north / CR W21 south--Amana Colonies, Cedar Rapids </Td> <Td> </Td> </Tr> <Tr> <Td> Johnson </Td> <Td> Oxford Township </Td> <Th> 230.072 </Th> <Td> 370.265 </Td> <Td> 230 </Td> <Td_colspan="1"> CR W38--Oxford, Kalona </Td> <Td> </Td> </Tr> <Tr> <Td> Tiffin </Td> <Th> 237.236 </Th> <Td> 381.794 </Td> <Td> 237 </Td> <Td_colspan="1"> Tiffin </Td> <Td> </Td> </Tr> <Tr> <Td> Coralville </Td> <Th> 238.698 </Th> <Td> 384.147 </Td> <Td> 239 </Td> <Td_colspan="1"> I - 380 north / US 218 / Iowa 27--Cedar Rapids, Waterloo, Mount Pleasant, Keokuk </Td> <Td> Avenue of the Saints; signed as exits 239A (south) and 239B (north) </Td> </Tr> <Tr> <Th> 240.237 </Th> <Td> 386.624 </Td> <Td> 240 </Td> <Td_colspan="1"> To US 6 (Coral Ridge Avenue)--North Liberty, Coralville </Td> <Td> </Td> </Tr> <Tr> <Th> 242.592 </Th> <Td> 390.414 </Td> <Td> 242 </Td> <Td_colspan="1"> 1st Avenue--VA Medical Center, University of Iowa Hospitals and Clinics and University of Iowa Athletics Complex </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa City </Td> <Th> 244.878 </Th> <Td> 394.093 </Td> <Td> 244 </Td> <Td_colspan="1"> Dubuque Street--Downtown Iowa City </Td> <Td> </Td> </Tr> <Tr> <Th> 245.975 </Th> <Td> 395.858 </Td> <Td> 246 </Td> <Td_colspan="1"> Iowa 1 (Dodge Street)--Mount Vernon </Td> <Td> </Td> </Tr> <Tr> <Td> Scott Township </Td> <Th> 248.992 </Th> <Td> 400.714 </Td> <Td> 249 </Td> <Td_colspan="1"> Herbert Hoover Highway </Td> <Td> </Td> </Tr> <Tr> <Td> Cedar </Td> <Td> West Branch </Td> <Th> 254.200 </Th> <Td> 409.095 </Td> <Td> 254 </Td> <Td_colspan="1"> CR X30--West Branch </Td> <Td> Herbert Hoover Presidential Library </Td> </Tr> <Tr> <Td> Springdale Township </Td> <Th> 259.230 </Th> <Td> 417.190 </Td> <Td> 259 </Td> <Td_colspan="1"> West Liberty </Td> <Td> </Td> </Tr> <Tr> <Td> Iowa Township </Td> <Th> 264.482 </Th> <Td> 425.643 </Td> <Td> 265 </Td> <Td_colspan="1"> Atalissa </Td> <Td> </Td> </Tr> <Tr> <Td> Rochester Township </Td> <Th> 266.431 </Th> <Td> 428.779 </Td> <Td> 267 </Td> <Td_colspan="1"> Iowa 38 north--Tipton, Moscow </Td> <Td> Western end of Iowa 38 overlap </Td> </Tr> <Tr> <Td> Sugar Creek Township </Td> <Th> 270.570 </Th> <Td> 435.440 </Td> <Td> 271 </Td> <Td_colspan="1"> US 6 west / Iowa 38 south--Wilton, Muscatine </Td> <Td> Eastern end of Iowa 38 overlap; western end of US 6 overlap </Td> </Tr> <Tr> <Td> Farmington Township </Td> <Th> 276.634 </Th> <Td> 445.199 </Td> <Td> 277 </Td> <Td_colspan="1"> Bennett, Durant </Td> <Td> </Td> </Tr> <Tr> <Td> Scott </Td> <Td> Cleona Township </Td> <Th> 279.667 </Th> <Td> 450.080 </Td> <Td> 280 </Td> <Td_colspan="1"> CR Y30--New Liberty, Stockton </Td> <Td> </Td> </Tr> <Tr> <Td> Walcott </Td> <Th> 283.902 </Th> <Td> 456.896 </Td> <Td> 284 </Td> <Td_colspan="1"> CR Y40--Walcott, Plain View </Td> <Td> </Td> </Tr> <Tr> <Td> Davenport </Td> <Th> 289.560 </Th> <Td> 466.002 </Td> <Td> 290 </Td> <Td_colspan="1"> I - 280 east / US 6 east / US 61 south--Rock Island, Moline </Td> <Td> Eastern end of US 6 overlap; western end of US 61 overlap; left exit westbound </Td> </Tr> <Tr> <Th> 292.517 </Th> <Td> 470.760 </Td> <Td> 292 </Td> <Td_colspan="1"> Iowa 130 west (Northwest Boulevard)--Maysville </Td> <Td> </Td> </Tr> <Tr> <Th> 295.092 </Th> <Td> 474.905 </Td> <Td> 295 </Td> <Td_colspan="1"> US 61 north / US 61 Business (Brady Street)--DeWitt, Eldridge </Td> <Td> Eastern end of US 61 overlap; signed as exits 295A (south) and 295B (north) </Td> </Tr> <Tr> <Th> 297.428 </Th> <Td> 478.664 </Td> <Td> 298 </Td> <Td_colspan="1"> I - 74 east--Bettendorf, Davenport </Td> <Td> I - 74 through traffic to Peoria is urged to follow I - 80 east around the Quad Cities </Td> </Tr> <Tr> <Td> Bettendorf </Td> <Th> 300.863 </Th> <Td> 484.192 </Td> <Td> 301 </Td> <Td_colspan="1"> Middle Road </Td> <Td> </Td> </Tr> <Tr> <Td> LeClaire </Td> <Th> 306.022 </Th> <Td> 492.495 </Td> <Td> 306 </Td> <Td_colspan="1"> US 67 / Great River Road--Bettendorf, LeClaire </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="2"> Mississippi River </Td> <Th> 306.268 </Th> <Td> 492.891 </Td> <Td_colspan="3"> Fred Schwengel Memorial Bridge; Iowa--Illinois state line </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> I - 80 east--Chicago </Td> <Td> Continuation into Illinois </Td> </Tr> <Tr> <Td_colspan="7"> 1.000 mi = 1.609 km; 1.000 km = 0.621 mi <Ul> <Li> Concurrency terminus </Li> <Li> Incomplete access </Li> <Li> Unopened </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th> County </Th> <Th> Location </Th> <Th> mi </Th> <Th> km </Th> <Th> Exit </Th> <Th> Destinations </Th> <Th> Notes </Th> </Tr> <Tr> <Td_colspan="2"> Missouri River </Td> <Th> 0.000 </Th> <Td> 0.000 </Td> <Td> </Td> <Td_colspan="1"> I - 80 west--Omaha </Td> <Td> Continuation into Nebraska </Td> </Tr>

What is the speed limit on i 80 in iowa