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tunnel heighth (or depth)
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The one time I rode Amtrak cross-country (back in the '80s, admittedly) , one of the svc workers on the line told us that all of the tunnels built, say, E of the Mississippi River were older than their counterparts on the W side of the river, so that certain kinds of VistaDome cars of the day (I guess) couldn't be used on passenger trains E of the Mississippi River. Given the desire of all freight operating entities to make their corridors (roads, RR, and so on) more powerful, would it not make sense for the RRs E of the Mississippi to increase the height (or depth) of all the tunnels? Has it, in fact, been done, or in the process of being done? Also, does anyone out there know why the Stevens Pass tunnel on the BNSF Washington line out of Everett has the "door" on it, when most other RR tunnels typically do not?<br><br>Riprap<br>
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