Thread: California High Speed Rail Thread
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Old Posted Jul 28, 2020, 12:56 PM
mrnyc mrnyc is offline
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Join Date: Jul 2006
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^ for reference the pacheco tunnel is to be 13 miles (21 km), with another smaller tunnel 1.5-mile (2.4 km).

https://en.wikipedia.org/wiki/Pacheco_Pass_Tunnels
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