Here are some images of the Four Bridges I took before and after they were drastically altered. The first bridge at the Birkenhead end became a concrete causeway and the second bridge was reduced to a fixed bridge. The 3rd bridge (a swing bridge) was also removed and the 4th bridge is the only working bridge now.
Looking from the Birkenhead end, this is the first bridge.
This bridge was removed completely
Another view from the pavement at the Birkenhead side.
--and after the bridge was removed.
This is the second bridge, with the 3rd and 4th in the background.
The second bridge was reduced to a fixed bridge. Notice the 3rd bridge is now removed.
This is the 4th bridge, with the 3rd bridge now removed.