Yesterday the Ft Madison, IA bridge over the Mississippi River was hit by a barge and the line was closed for about 4 1/2 hours. Bridge damage resulted but it was considered not serious enough to close the line further. The Amtrak SW chief uses that line and there were delays. Hopefully the damage was light, not dangerous for a collapse, and can be repaired quickly. For passengers that will take the SW Chief it may be a good idea to monitor departure and arrival times.