This is nothing compared to the estimated $3.5 billion to redirect the tracks underground in San Diego. Coastal bluff failures are occurring within several feet of the tracks on a regular basis. I spend time at this beach and I don't know how this track will be viable in a couple years, with or without rising sea levels. Once it is deemed unsafe, San Diego will be completely cut off by rail.
https://www.latimes.com/local/lanow/la-me-ln-sd-del-mar-bluf...