You probably know, but originally Merseyway was built as a road on stilts, hence the Mersey"way" , and was needed because it carried the old trams, which required relatively flat ground. The tram depot, and the fire station used to be where the entrance is now to Merseyway shopping centre. Merseyway was built astride the river, which back then was pretty filthy and hardly a feature worth preserving. Only later was the shopping centre built, and the sides where the stilts are was blocked in, thus hiding the river completely. Under Merseyway you can see the foundation stone of the early Stockport Grammar School.
See:
http://interactive.stockport.gov.uk/...rca%201960.jpg
The curved road is Merseyway. As a very young kid I remember riding an old tram along Merseyway.