The bridge over the channel between New London and Groton Connecticut drops to allow a push-pull Providence and Worcester and an Electric Amtrak train to pass. From http://railfan.ca/31.08.07.html
My Jeep doing a mud hole, (only just) near zigzag in Newnes S.F on 31.08.07. The video footage ran out so I threw in a photo or 2 at the end just to show she did make it