Criminal bridge. This bridge takes the condemned into the cells of the Crown Court. The towpath is one of the places where 'The Pusher' lurks, ready to murder people. Something like 60 odd people have been hauled out of waterways in the city in the past few years or so, and some people are suggesting that there is a serial killer afoot. Manchester does have previous for serial killing, so possible.
Handily, there is also a probation office on the next street at the top of Canal Street.
The Assizes from the other side: