Like your comments jimblob .notice the two people that objected to the bypass have not come back with alternative proposal .
Wow I'd best be quicker, otherwise I'll lose the argument!
The solutions are simply less use of the car by everybody, combined with more public transport being made available, chiefly rail, as it doesn't clog the roads up. Both are a change of mindset and longer-term planning, so I don't hold out much hope from the public or from politicians. At least Steve Gribbon is trying to drum up support for a railway.
You should consider what will be achieved by building a "relief" road costing 500 million (add the usual interest and contractor delays and imagine how much more that might be) and destroying miles of countryside which we won't get back.
The M60 is a result of a succession of tacked-on "relief" roads designed to take traffic away from local areas around Greater Manchester which were eventually all joined up. It was full to capacity in some areas as soon as it was opened. Road begets road.
An earlier contributor talks about decades of bad traffic in Bents Lane and Marple Road. There used to be a perfectly serviceable railway line linking Marple and Romiley with Stockport (Tiviot Dale station) that could have been a much-needed alternative had it existed today. Instead it was built over by, er, the M60.
That shouldn't deter us from looking at other alternatives, such as re-routing one of the existing lines to Stockport via Belle Vue for example, or re-tracking the Middlewood Way up to Middlewood to join up with the Hazel Grove route. 500 million might go along nicely towards either.
Once rail networks expand and improve, it might persuade people to stop using their cars more, which is also vital.