I am following up to my previous comment about the Oakland to SF connection near the BART transbay tunnel... it is indeed part of the proposal. See pdf page 11 of the Bay Area to Central Valley HST EIR/EIS Study at following:
http://www.cahighspeedrail.ca.gov/pu...gnStatOpts.pdf
Also, this page provides a number of preliminary engineering concepts for alignments acrss the bay.
http://www.cahighspeedrail.ca.gov/pu...lternative.asp