Maiden voyage across my bridge.

Everything went perfect. I drove my tractor, all 8000 lbs of it, across my bridge today. There was no signs of trouble at all. I had set up a crude measurement gauge under the bridge. I wanted to se if I could detect and measure any sag in the bridge as I placed a load onto the deck. If there was any, I couldnt tell. It showed no signs of any downward movement as I drove the tractor across.