Yea I saw this too on same bridge and Mission. Sorry no Save left but in my case I had halted a HT in the middle of the bridge and then it was stuck when I tried to move it again. I had to go back a Save and then made it cross Fast with no issue. There are numerous vehicles in this Mission so I have never stopped anybody on the bridge again and just rush across to hopefully not get stuck. So far has worked and everything crossed with no problem.