Which yard. Where you going? You delivering a box? Or collecting a box. Do you know how to work containers? The 4 hooks on the corners need to be secured. Is this a US Customs Load? Do you have the permit for over weight? ALcohol permit or whatever else is special with that box? Which railyard?> There are hundreds allover USA I think think of 4 right here in Arkansas, excluding Memphis.
You have managed with one sentence to generate a can of worms in form of many questions.
There is literally nothing for us here on this internet to work with trying to solve a very vague and non specific question.