July, Aug. 2002: Two bridges in Central China collapse, killing a combined 19 people. Sept. 2001: The Queen Isabella Causeway in Texas collapses after a tow boat captain loses control of a string of barges and currents drive them into a bridge support.
The average flying time for a direct flight from Bemidji, MN to Chicago is 1 hour 36 minutes; Most direct flights leave around 9:36 CST
It is normally recommended that you get to the airport two to three hours ahead of the flight for international flights. My experience is that you usually don't need that much time. However, Minneapolis is also a very large airport, and if you have a remote gate, you should allow time for the walk.