We looked at using a flatbed railcar. Several things led us to discount it. First, the sheer weight would require a very large crane to place it and we're not sure the construction road (CR-6 on top of geogrid) would be able to handle it. Secondly, it's not easily removable so it would seem...
I work for a firm that primarily does sanitary sewer rehab studies. In our most recent project, the contractor put in a temporary stream crossing that consisted of a CR-6 (crusher run) culvert and corrugated metal pipe, as per the Maryland Sediment and Erosion Control Design Manual. To make a...