Why would you go to the Bridge Code to qualify a stud procedure for the Machinery Code, specifically for Cranes and Material Handling? There is no correlation there at all.
D14 used to default many items to D1.1 but the D14 Committee has really been busy developing all their own procedures and standards to make it a more complete stand alone code.
There should be some reference contained in it as to direction to be taken, but without it in front of me I don't know where. Without any other reference I agree with Al. Take it to the job's engineer/customer and see how they want the job to procede.
Have a Great Day, Brent