The Santa Fe right-of-way is not where I-80 is now. It cuts through the middle of Berkeley, approximately halfway between the SP mainline and UC Berkeley. I used to run on the right of way when attending UC Berkeley around 1984. BART is built over the ATSF right of way through El Cerritos, when it becomes an elevated line after the subway through Berkeley. At least back in the 1980s the ATSF right of way was still fairly intact. I forget exactly when the branch line was abandoned from Richmond to Oakland, but it was around 1980, give or take a few years.