Pic showing how wide the shelf will be and my other junk and projects laying aroung. The shelf may go another 10' and start hanging cabinets at that point.
Hopefully rest of the shelf will go up tomorrow if HD has more 6' rod in stock.
Those are nice brackets.I have built simlar shelves with 2x6 screwed in the side of the framing like that,not sure it would hold the same weight though.Instead of parking your mower under it,I'd bet it you would have no problem parking it on it.