Here is more of the story from the 24 Hour News Source, KCRG News:
http://www.kcrg.com/news/local/8192587.html
and from KWWL:
http://www.kwwl.com/News/index.php?ID=12663
Traffic is halted in both directions. Clean-up has not started as of 6pm CDT.
Clean-up could take a few days since the Iowa River is flooded after the flooding rains over the weekend. The flooded waterway can be seen from the report. Look for a lot of detours on the BNSF the next few days.
Info from the Des Moines Register:
http://www.desmoinesregister.com/apps/pbcs.dll/article?AID=/20070626/NEWS/70626040/1001&lead=1
http://www.desmoinesregister.com/apps/pbcs.dll/article?AID=/20070627/NEWS/70627050/1001