 The report was released just  prior to the  August 1, 2007 anniversary of the I-35W bridge collapse, which resulted in the death of thirteen people.
<coherence>  The report was released just  prior to the  August 1, 2007 anniversary of the I-35W bridge collapse, which resulted in the death of thirteen people.
 The report was released just prior to the August 1, 2007 I-35W bridge collapse, which resulted in the death of thirteen people.