There was a similar issue with pedestrian ramps at Lincon Financial Field in Philadelphia, where the Eagles play. http://articles.philly.com/2007-01-14/news/25

There was a similar issue with pedestrian ramps at Lincon Financial Field in Philadelphia, where the Eagles play. http://articles.philly.com/2007-01-14/news/25221645_1_ramps-engineering-problem-london-bridge http://articles.philly.com/2007-01-14/news/25221645_1_ramps-...