Getty Images/Scott Olson
Emergency workers patrol the area around the collapsed wreckage of the I-35W bridge August 3, 2007 in Minneapolis, Minnesota.
Getty Images/Mark Wilson
On the day after the collapse of the I-35W bridge in Minneapolis, Aug. 2, 2007, police officers walk past cars that were damaged.
AP Photo/Morry Gash
Divers search for victims near the Interstate 35W bridge, Thursday, Aug. 2, 2007. Some bodies were seen still in their vehicles, but divers couldn't reach them because of swift currents.
AP Photo/Reed Saxon
Cars remained abandoned on the remains of the I-35W bridge the day after it collapsed.
AP Photo/Tim Davis
Overturned vehicles on the banks of the Mississippi River after the bridge collapse, Aug. 1, 2007.
AP Photo/Morry Gash
This is the scene on Thursday, Aug. 2, 2007, the day after the collapse.
Scott Olson/Getty Images
Vehicles rest on a collapsed section of the I-35 bridge August 2, 2007, in Minneapolis. The bridge, which spans the Mississippi River in the city's downtown, collapsed Wednesday during the evening rush hour. The children exited the schoolbus through the rear emergency exit.
Scott Olson/Getty Images
Vehicles stopped before a collapsed section of the I-35 bridge August 2, 2007 in Minneapolis. The eight-lane bridge, a major Minneapolis artery, was in the midst of being repaired and two lanes in each direction were closed when the bridge buckled during evening rush hour Wednesday.
AP Photo/Star Tribune, Jerry Holt
Melissa Hughes holds an unidentified infant Wednesday, Aug. 1, 2007, after the collapse of the Interstate 35W bridge. Hughes was driving the red car in the background of the photo.
AP Photo/Star-Tribune, Jeff Wheeler
The Interstate 35W bridge after it collapsed Wednesday, Aug. 1, 2007.
AP/The Minnesota Daily, M.Mead
A helicopter moves over the scene of the bridge collapse.
AP Photo/Star Tribune, Jium Gehrz
Cars in the Mississippi River after the Interstate 35W bridge collapsed Wednesday, Aug. 1, 2007.
AP Photo/Adam Wolf
A view of the collapse from the banks of the Mississippi River, Wednesday, Aug. 1, 2007.
AP Photo/Pioneer Press, Ben Garvin
Fernando and Shana Sifuentes and other onlookers watch the rescue efforts from Gold Medal Park in downtown Minneapolis, Wednesday, Aug. 1, 2007.
AP/The Star Tribune, Heather Munro
Vehicles sit on the remains of the I-35W bridge, Wednesday, Aug. 1, 2007.
AP Photo/Jacob Reynolds
Emergency workers and cars on the Interstate 35W bridge after it collapsed, Wednesday, Aug. 1, 2007.
AP Photo/Pioneer Press, Ben Gavin
Emergency personnel deliver an injured person from the Interstate 35W bridge collapse to the Hennepin County Medical Center Wednesday, Aug. 1, 2007, in Minneapolis.
AP Photo/Star-Tribune, David Denny
The Interstate 35W bridge is shown after it collapsed Wednesday, Aug. 1, 2007, in Minneapolis.
AP Photo/Star-Tribune, David Denny
Another aerial view of the scene, Aug. 1, 2007.
AP/The Star Tribune, David Brewster
Emergency personnel transport an injured person after the collapse of the bridge, Aug. 1, 2007.