Iraq car bomb brings down bridge, traps troops

With a thunderous rumble and cloud of dust and smoke, an apparent suicide vehicle bomb brought down a section of highway bridge south of Baghdad, wounding several US soldiers guarding the crossing and blocking traffic on Iraq's main north-south artery. There was no immediate US Army confirmation on the number and severity of the casualties Sunday. An Iraqi civilian also was injured, said Donald Campbell, of the private security Armor Group International, who helped in the rescue.