Nyora kupfuurira kweiyi ndima - I-380 inoyambuka nzizi mbiri huru dzeIowa, Iowa neCedar. Nzizi dzose dziri mbiri dzakakanganisa mugwagwa unopfuura nomunharaunda iyi pakaitika mafashamo makuru, sezvakaitika muna 1993 uye muna 2008. Mukati meMafashamo Makuru a 1993
I-380 neIowa 965 zvose zvakavharwa paRwizi rweIowa Coralville Lake reservoir pakati paJuly 13 naJuly 28. Migwagwa yakavhurwazve pashure pokunge mvura dzegungwa dzadzokera shure zvakakwana kubvumira vaongorori veDhipatimendi Rokufambisa kuongorora mabhiriji matatu ari pamusoro pemvura.