Power Ranger - you are either a traffic warden or one of those Local Authority parking wardens. I doubt very much that you have any useful connection with aviation, judging by your immature postings.
ArkRoyal's input was measured and sensible. The fact is that crash-barriers on the approach side of the bridge would have prevented this terrible accident - in effect a break in the error chain. Such barriers are commonplace on much of our motorway network but for some reason were missing here.
Before paranoia gets the better of you, try wondering why everyone else on this topic thinks you're rather silly.
Changing subject slightly, it's worth reflecting on what might have happened to the driver had he exercised his right not to say anything, when cautioned by police.
Apart from telephone records showing somebody was on the phone throughout the night, there would have been very little other evidence of the driver's physical and mental state before he set off.
It wasn't the fact that he had been on the phone all night that got him convicted, it seems he was damned by his own admission that he'd not tried to get any sleep earlier in the day.
Moral of the story: when cautioned after any accident/incident, it is invariably better to remain polite and exercise your right to say nothing until you've had time to calm down and give a measured response. It's not immoral, it's our system of justice.
Power Ranger - I've just had another thought. Maybe you're a traffic policeman....