Built by the Bay City, Michigan, Dredge Works, this walking dredge is the earliest known survivor of its type. It was designed for swampy terrain where wheeled or tracked vehicles would bog down, with the machine’s weight distributed over shoes. To move, the middle movable shoes were lowered to take some of the weight off the corner shoes, the frame was then pulled forward about ten feet using both an on-board winch and the shovel bucket, and lowered back onto the corner shoes. This machine was used to dredge roadbed fill material for the Tamiami Trail through the Everglades.