Spray paint shows a 16-inch difference in the tops of walls separating the north and southbound lanes of the Interstate 495 bridge over the Christina River near Wilmington, Del., Thursday, June 5, ... more 
Spray paint shows a 16-inch difference in the tops of walls separating the north and southbound lanes of the Interstate 495 bridge over the Christina River near Wilmington, Del., Thursday, June 5, 2014. The walls were designed to run parallel to one another, but they separated after four support columns began to tilt. The bridge, a bypass that helps alleviate congestion on I-95 and normally carries about 90,000 vehicles daily, will be closed for at least several weeks for emergency repairs to the columns. (AP Photo/Patrick Semansky) less 
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Associated Press | Photo By Patrick Semansky
Thu, Jun 5, 2014 5:45 PM EDT