henn has a theory. >> the problem, in my opinion, is the speed. the speed limit is 25 miles per hour. i have noticed that a lot of the trucks that hit the crash beam go way too fast. and if you're driving a rental truck and you are really focused on sort of your immediate environment, if you're not experienced, you might very easily miss obvious signs and all of a sudden, boom, get stuck under this bridge. >> while it only takes a matter of seconds for a truck to get stuck, getting unstuck is a completely different story. >> the process of getting the truck out depends on the severity of the crash. some hit the crash beam, back out and drive off and others get stuck and can't get the truck out without help. >> but no matter how destructive the crash is to the trucks and the bridge, all of the drivers jurgen henn catches on camera have been able to walk away. >> i don't know of anyone who got seriously injured from a crash. they're shaken up. bruised egos, for sure, but no serious physical harm. >> as for the 100-year-old bridge, things keep rollin

and so we put it from the holster and quick draw, and there is no doubt in my mind that it is henn scent that i needed to practice more so than ever. >> that ra prak tpractice may hd save his life. corporal meacham says it is a miracle he is still alive. >> i would not have survived if it were not without heavenly help. i was a religious person before this incident and i certainly am now. >>> and coming up, a police chase takes a terrifying turn when a toddler flies out the window. >> it is actually gut wrenching to see that happen to the child. shocking. >> and later, a fatal encounter on a bridge. ♪ losing feeling in my toes ♪ ♪ nothing beats that new car smell ♪ ♪ chicken parm you taste so good ♪ ♪ nationwide is on your side ♪ mmm mmm mmm mm mmm mm mmmmmm ay... sometimes too close, which means we're always getting into each other's hair. that's why we use head & shoulders. keeps us 100% flake free, and smells gorgeous. i use it... my whole world uses it. head & shoulders. now smells better than ever. there are more reasons than ever why now is the best one: verizon's the largest, most