I don't know the area, but if there is a four lane highway with a short two lane stretch creating a bottleneck, that should be fixed. More broadly, however, the Bay area's traffic problems aren't going to be solved by more roads. People need to live closer to their jobs, which would require a relaxation of building restrictions. If the locals aren't prepared to do that -- and I've no objection if people want to preserve the character of existing neighborhoods and oppose densification -- commuters will need to shift to mass transit, preferably light rail. That implies a long-term shift in the distribution of job centers, since rail is good at point to point/hub to hub, but very bad at serving dispersed development. The third "solution" is to accept that the area is at maximum density and turn further development into essentially a zero sum game. Higher value development will gradually crowd out lower value development, which is good for those who are affluent enough to inhabit the gilded cage but rough on those who are displaced.
If these options are not acceptable, we could just nuke it from orbit and start over. That has a certain appeal.
The rail BART system is so raunchy and filthy with bums beggars and druggies that decent people are trying every possible way to avoid it. Oh yea, BART officially announced the reason it’s escalators almost never work is -—— too much human excrement jamming the gears For this the taxpayers shelled out Billions and the fares are high on top of that.