YoHo1975 (4-21):
My familiarity with Portland, OR and Seattle, WA is very limited (only a visit once in 1979), but a few possibilities come to mind in attempting to address your inquiry.
The populations of San Diego, Los Angeles, and San Francisco and their surroundings are considerably greater than Portland and Seattle's.
Also, the three California cities had freight rail lines that the major railroads didn't need anymore, which transit interests purchased. In my cursory reviewing aerials, that does not appear to have been the case for Portland.
It is hoped the above two thoughts gives you, YoHo1975, some ideas to entertain.
For your comparison, some captioned photos of highly populated Southern California areas are below ...
The Metro Gold Line through Pasadena (near Los Angeles). Portions of the old route (the third photo) of the famous Santa Fe Super Chief now sees light rail commuter usage.
The Gold Line will soon be extended eastward over these unused rails ... the very rails decades ago that saw famous movie stars ride over them.
On the eastern end of the sold line, Santa Fe Railway retained trackage rights. Heavier passenger equipment is more compatible with freight trains than light rail is.
The San Diego Trolley.
In Old Town of San Diego, freights and heavy commuter rail share the right-of-way with light rail, but on separate adjacent lines.
The above four-tracks start as four-tracks in Downtown San Diego. The old Santa Fe depot is on the background left. The BNSF Railway (Santa Fe) sold their line to commuter interests, but retained trackage rights.
To reiterate my suggested answer, availability of rail lines for sale and population density may be the big difference between the Portland-Seattle area and California.
Take care,
K.P.
----------------------------------------------------------------------------------------------------------------------------------- K.P.’s absolute “theorem” from early, early childhood that he has seen over and over and over again: Those that CAUSE a problem in the first place will act the most violently if questioned or exposed.
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