|Considered by many to be one of Lionels finest operating accessories ever. A remake of the classic postwar #313, made from 1940-42, 46-49. Made with sturdy metal construction just like the postwar version. Use your transformer or better yet, your hand held cab-1 to make the bridge open and close. The approaching tracks will be depowered. (SILVER/GREEN BASE) This is one of those accessories that IS A MUST for any layout.