The original plan was to finish the rest of the motorway by about 2013 , but because of the UEFA decision to host the 2012 UEFA European Football Championship in Poland and Ukraine and the resulting need to improve the road infrastructure connecting the two countries , the date for opening the motorway to traffic was moved up to June 2012 . This ambitious target was not attained after multiple delays , some caused by the floods of 2010
floods of 2010
2010 Central European floods
A4 autostrada (Poland)