A few weeks ago, I was lucky enough to be taken out by the awesome PR folks at Caltrans (thanks Margena & Victor!) on a boat tour of the under-construction east span of the new Bay Bridge. I got to have a look at the very early stages of construction way back in 2009 and it was impressive to see how much it had come along in the time in-between.
Notably, the tower for the suspension span coming out of Yerba Buena Island has been mostly completed. The tower, 525ft (160m) tall is the centerpiece of a bill that mandated the the new bridge become an iconic structure. Unlike conventional suspension spans, the self-anchored suspension for the new Bay Bridge isn't connected to the ground. Rather, one single cable loops under each end of the 2047ft (624m) suspension span and is anchored at the top of the suspension tower.