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I basically agree, but one thing I've begun to wonder about is the "through terrain that isn't too challenging" part, given that the Central Valley has been sin
by HillaryBriss 7y ago
I basically agree, but one thing I've begun to wonder about is the "through terrain that isn't too challenging" part, given that the Central Valley has been sinking in parts because of aquifer depletion.
- Gibbon1 7y agoMost of the system follows 150 year old rail right of ways. Places where it doesn't is through Pacheco Pass and the San Gabriels. Pacheco Pass already has a aqueduct tunnel. Boring a tunnel through that just costs money. San Gabriels are trickier, really depends engineering vs money vs how fast do you want to go vs surface disruption.