The recent storms demonstrate once again that Caltrain underpass flooding is a clear and present danger to the public. Deadly is no understatement: while only harrowing water rescues occurred in the 31 December 2022 atmospheric river, two people lost their lives in the flooded Hillcrest Boulevard underpass in Millbrae on 23 December 2021.
Poor "split" grade separation designs that only marginally lower the height of the tracks compared to fully elevated tracks are sure to kill again if Caltrain and surrounding communities continue to build more of them. (lookin' at you, Redwood City!)
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Harbor Boulevard, Belmont
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Ralston Avenue, Belmont (M.M. Parden photo)
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42nd Ave, San Mateo (M. Sly photo)
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Hillcrest Boulevard, Millbrae (December 2021)
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