HF 56" top box spanning a gap

[bradpac]

I am looking at getting a 56" HF top box to sit on top of two 14" pedestals with a 28" opening in the middle to roll my welding cart into. Do these top boxes or any top boxes have enough structure to span a gap when fully loaded or do I need to build a frame for it to set on?

 

[Mr_B]

I suspect that be fine as long as level resting between the pedestals & past the draw bank support on right side which 14" probably do and the 56" is shorter than 56" .