maximum span length for pre-stress concrete box birder

huangyhg

maximum span length for pre-stress concrete box birder
i would like to know what is the maximum span length in a curve alignment that is feasible for cast-in-place prestressed box girder bridge.
my other question is do you consider construction methods such as design-bid-build, design-build and cm @risk through value engineering that helps in selecting the type of superstructure for a bridge such as t-beam, box girder cast-in-place, box girder cast-in-place prestressed, precast prestressed concrete, steel girder etc.