But while your criticism that a bridge has hugh environmental impact and be terribly expensive as well, is very well made. It might be that it has infact been a environmental relief to the area. But I have to admit, that I don't know enough about the traffic situation in that area, before the road was opened.
so if my assumption is right, and a bridge had to be built. Given a choice between an 0815 bridge and one designed by Foster - i would always take the Foster bridge.