Skiff hanging mid air in Act III:Some Assembly Required

Hey plz fix this where in a mission where u have to manually override the bridge to let the train carrying the rocket pass from it,after completing it when i try to get back to my skiff to further proceed onto the story mode i saw that the skiff is hanging in mid air and there is no way one can grab it by any means possible.
Did reloading last checkpoints but failed nothing changed.