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up150.com]
It's interesting that the freight business in SAn Francisco could go from what's described here to hardly anything. Obviously it wasn't simply a matter of business drying up but SP choosing to get out of the business and driving away customers by discarding infrastructure and driving up prices.
Considering how quickly the traffic contracted in the late 70s to early 80s it's amazing there is still a local working SF. I suppose this is due entirely to the dirty dirt business and before that the container port business? And yet it appears that even this business wanes at times to hardly anything and you'd think UP would just as soon give it up.