The flatbed trailer would exceed the mini's ability to set it, but that is not why we did not go that way. We already have a huge stack, I mean 3x what we need of the 6x17 x 10' long deck boards. They are just short beams. We are adding anchors in the center and we will split a deck beam over that, so we can stick out 2' on each side to set the shear wall of a roof structure on each side and no impinge on the width of the bridge. I'll sketch up the roof design. The 4 long beams are only $400 and I can easily set those with the mini. The blocks were $151 each my price, retail was $182. They did the trick. He sent me this, but they are already poured now.