Just imagine what it was like, getting that Overhead Railway when the docks was in its heyday. Ships from all around the world, all the arl dockers going to and from work, and you could see the lot from an overhead railway. 
I was just reading a little bit on the LOR. Apparently, after a survey it was found that many of the viaducts were in need of structural repairs, which were deemed unaffordable. Hence its closure in 1956 then demolition in the year or so afterwards.
The Dock Road used to be my favourite road in the city. As kids we'd ride over to Llandudno, Conwy etc on our bikes. We'd always ride down the dock road to get the ferry across the river. I loved seeing the ships and freight trains crossing the road. I recall seeing the Atlantic Conveyor tied up alongside a sister ship in one of the docks. It was later sunk in the Falklands War.
It's such a shame the railway has gone. Same with the docks that have been filled in and lost too. I'd love to have seen a portion of the old landing stage restored and preserved too. Too much of our history has been ripped out.