No, some artists just change the chorus to a "chorus 2" and sing/play that as the bridge.
Bridge to Nowhere - song - was created in 2006.
Low Bridge - song - was created in 1905.
The length of the bridge in the song is not specified.
alter bridge
The Chorus and the bridge/transitions are most important. But the chorus of a song is what people remember/gets stuck in their heads after they hear a song. I know that's how it is with me. I always remember the chorus and that usually has the name of the song in it too.
London Bridge Is Falling Down was created in 1744.
Not always, for a bridge may be over a road.
No because it is not real.
London Bridge was falling down, so they made a song.
Open Your Eyes - Alter Bridge song - was created in 2004-06.
The term for the middle of a song is the "bridge."
This might be a start:a-bridge-too-far