The information about the plane attempting to land on the fly-over bridge is incorrect. It was landing on the wide median at the juncture between I20 and Hwy 287. With both the Rangers Ballpark and Cowboy Stadium (few locals use the commercial designations), banner-towing planes above Arlington are a common sight. I've often wondered what would happen if one of them had an in-air emergency. Thankfully, this pilot had the sense and skill to TRY to land in what appeared to be a safe area. According to the person the plane is headed toward, it hit a bump and became airborne again before hitting the bridge and the truck.
See the original YouTube upload and comments by the person who took the footage at https://www.youtube.com/watch?v=zMwDUQC6dhE&feature=youtu.be
The NWS would have been on top of this storm moving in with warnings galore. And the controllers in the tower should have seen it moving in. Why was this plane even given clearance to leave the gate?