Alabama A freight train carrying segments of the space shuttle's solid rocket boosters derailed Wednesday after a recently repaired bridge collapsed over boggy ground, authorities said. Six people aboard the train were reported injured, one critically.
NASA said it was not immediately known whether the equipment was damaged. But space agency spokesman Allard Beutel in Washington said the accident should not delay any shuttle launches.
The trestle collapse near Myrtlewood was under investigation.
The shuttle's twin boosters are 150 feet tall and consist of four propellant segments each. They are used during liftoff and the first two minutes or so of flight to help the spacecraft break free of Earth's orbit, and are then jettisoned into the sea, after which they are recovered, refurbished and reused.