P T Deutermann - Train Man torrent

Only six major rail bridges cross the Mississippi River and connect
one half of our country to the other. When one of them collapses as
a freight train is crossing, the FBI sends agents Hush Hanson and Carolyn
Lang to investigate. Hush and Carolyn suspect a bomb, but there are
no clues to suggest who planted it.

Meanwhile, at an Alabama army depot, a military train carrying a deadly
cargo begins its journey west. This train must cross the Mississippi
before its cargo becomes unstable - and then another bridge goes down.-

As more bridges go down and the plight of the doomsday train intensifies,
it becomes ever more obvious that Hanson is being set up to take a fall
as part of some bureaucratic political intrigue within the FBI