Miss Washer's 5th Grade Class

When traveling south on a sailboat from Lake Ontario there are many bridges and locks to contend with. Our sailboat has a mast that is 60 feet high so there are some bridges that we can go under and some others that have to lift up so that we can get through. This is a lift bridge that raises up the bridge bed itself. It used to be on the C & D Canal but it has been replaced by a very high bridge. Other kinds of bridges include the swing bridge and the bascule bridge. Both of these bridges must open for a large sailboat to pass through. There is a new railroad lift bridge on the Chesapeake and Delaware Canal but it is usually up.