So you wish to decongest these junctions by such bypass ? Then should we suggest some more Junctions ?
A bypass is rarely serves as hi-speed utility and often used for freight movement or avoiding reversals,
The AJJ bypass which is used by YPR Duronto is example, So is JTJ Bypass. And here if this suggested bypass is single line then the existing line is much better and if double then expenditure will be issue as nothing new can be achieved because a strait double line already exists.