They've spent about 10.3 billion so far not all of which has been spent on the central valley section. And this spring they approved 4.2 billion to finish the initial section. So we're talking 13 billion for 100 miles. One tenth your claim.
Worse for the Nimby's and industry funded AstroTurf groups is the last court challenges have failed. And so the courts can no longer be used to slow things down either. All they can do is continue to pay for doom and gloom articles to be published.