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
Flying time from IAD to SJO. The total flight duration from IAD to SJO is 4 hours, 34 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds.