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Old Posted Jun 20, 2018, 1:20 PM
jmecklenborg jmecklenborg is offline
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Quote:
Originally Posted by caligrad View Post
Is elevated HRT more expensive than a subway ? or are the costs the same? I feel elevated HRT, not the steel girder kind in Chicago an NYC, but the reinforced concrete railway should be less expensive? I know people say LA doesnt have a thing aginst EL trains but if it costs more to dig, why not consider the alternative immidiately? if done correctly like in some countries, they can pump out viaduct pieces quickly and effieciently off site and truck them in. Downtown, anything around the wilshire corridor and the west side should remain subway but i feel everywhere else should either be LRT or elevated HRT.

I remember a long time ago someone offering the simple rule of thumb that elevated is 2x what surface costs, and subway is 3x the cost of surface.

The structure that supports heavy rail obviously needs to be more robust than one that supports light rail, but I don't know why HRT subway is more expensive than LRT subway, other than the use of a somewhat wider bore.
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