Bridge construction project

Dear All,

This is regarding the construction of a vehicular and pedestrian bridge project. For vehicular bridge there are 3 options 1.With presressed box girder 2. Prestressed box girder with curved soffit 3. Precast prestressed" I "girder. For pedestrian bridge also optios such as  1.Prestressed box girder with cladding 2. Steel truss bridge with GRP fascia. 3. Prestressed ox girder with curved soffit. Your expert opinions regarding the planning phase and risk elements considerations also cost effective methods are highly appreciated. Also which will be the most cost effective option.

Warm Regards,

Sunil.