Bug on the bridge-ps4

hello, I’m sure ps4 and I have a really annoying bug. At the beginning we have to go through a bridge and destroy an antenna but I’ve already done it and now I’m like stuck on this bridge because it says that I don’t have it done and I cannot leave the antenna area.

That’s the 4th mission “The Road to Salthamn”.

I don’t know a quick solution other than replay all 4 missions. But I advise to make manual saves of your game-save-file folder after each finished mission. That way if something goes wrong, you can load a previous game save.