let's talk to doctor andrew barr from sheffield university's civil and structural engineering departmentandrew, what is your view of what happened and why the whole bridge more or less should collapse so quickly having been hit by that cargo vessel? the collapse so quickly having been hit by that cargo vessel?— by that cargo vessel? the videos that we have _ by that cargo vessel? the videos that we have seen _ by that cargo vessel? the videos that we have seen are _ by that cargo vessel? the videos that we have seen are of- by that cargo vessel? the videos that we have seen are of the - by that cargo vessel? the videos i that we have seen are of the central part of a much larger bridge. but this central part is a truss structure, a lattice type structure you can see, it is a trust, and it is continuous over the three spans of the bridge. that is obviously acting as one structural piece. —— truss. what has happened is when that ship has crashed into the peer of the bridge and damaged it, part of the bridge and damaged it, part of the bridge is now trying to span twice the distance it was

for more on the structure of the bridge — we've been speaking to dr andrew barr, from shefield university's. he told us more about how the bridge might have collapsed. it is part of a structure which you can see and the videos that we see are of the central part of a much larger bridge, but the central part is a truss structure. so that sort of lattice type structure you can see is a truss and that truss is continuous over those three spans of the bridge. so that's all basically acting as one structural piece. essentially what's happened is whenever that ship has crashed into the pier of the bridge and damaged it, part of the bridge is now trying to span twice the distance it was previously. and so that's why the bridge has then started to fall. it looks quite shocking that the whole thing then... so the damage propagates along the bridge and it all collapses in one go. in normal operation, the way this bridge works is actually beneficial because the continuous nature of the truss means that it can share the load between the different spans. it makes means you can build a much more efficien

he wanted andrew mccabe, and jim comey, and pete strzok and liz paige prosecuted. bill barrt precarious. there would be no bill barr in a second term justice department. and, you know, our mutual friend michael cohen did go to jail. throw him back in for writing a book. >> going to jail again, they'll come after him again. by the way, i'm afraid. you know, i've been one of the most outspoken guys, you know, it's interesting, somebody said to me, are you afraid if he gets reelected? and i hadn't thought about it and like he's going to come after joe and me, might come after you. this is what people are not comprehending. here's the campaign the democrats need to run, and i've been thinking about this a lot. there are four people that need to step forward. kelly, mattis. mcmaster and milley and there needs to be a general campaign where these generals who have worked with him need to turn to the american public and turn to the camera and say you don't understand how scary this can be. we really can go over a cliff here, these people patriots need to start to stand up because t