Here are a couple images to illustrate the difference in scale between the Patullo and Pitt River bridges. Also note the Fraser is much deeper than the Pitt and there are several more piers to construct. And then don't forget the plan for an improved connection with the SFPR.
https://www.google.ca/url?sa=i&rct=j...57603117362484
Google
https://www.google.ca/url?sa=i&rct=j...57603117362484