On the north side there was also a plan to bridge San Francisco / Angel Island / Tiburon! Part of it still exists as Route 131. https://www.flickr.com/photos/w

On the north side there was also a plan to bridge San Francisco / Angel Island / Tiburon! Part of it still exists as Route 131. https://www.flickr.com/photos/walkingsf/4047626058/ https://www.flickr.com/photos/walkingsf/4047626058/ https://www.flickr.com/photos/walkingsf/4047626054/ https://www.flickr.com/photos/walkingsf/4047626054/ https://www.cahighways.org/ROUTE131.html https://www.cahighways.org/ROUTE131.html Here you can see an idea of doubling-up the Bay Bridge, plus a view of the Southern Crossing / I-980 alignment: https://www.flickr.com/photos/walkingsf/4247129432/ https://www.flickr.com/photos/walkingsf/4247129432/