CONFIRMED CONFIRMED, when you linked a bridge, despite it still have a normal look, there is a kind of invisible shape around it. Vehicles and trucks can't cross it anymore. They explode or fall in the river once they reach the bridge. It's the same for the road bridges. If i unlink the bridge the vehicles can cross the bridge safely This is a BUG. A big one, as it is now impossible to add bridges in scenarios.
Let say you want your train stops when the next bridge have been destroyed.... It is not possible anymore. !!!!