Rubuta ci gaba don wannan sakin layi - I-380 ya ƙetare manyan koguna biyu na Iowa, Iowa da Cedar. Dukkanin koguna biyu sun shafi hanyar da ke tsakanin jihohi a lokacin manyan ambaliyar ruwa, kamar yadda lamarin ya kasance a 1993 da 2008. A Lokacin Babbar Ambaliyar Ruwa ta 1993
, I-380 da Iowa 965 duka an rufe su a Kogin Iowa na Coralville Lake tafki tsakanin Yuli 13 da Yuli 28. An sake buɗe hanyoyin bayan ruwan tafkin ya koma baya sosai don ba da damar masu binciken Ma'aikatar Sufuri su bincika gadoji uku a kan ruwa.