Category talk:Railroad tunnels in Colorado

Trains Portal

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United States: Colorado

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Engineering

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Civil engineering

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Bridges and Tunnels

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Inclusion?

Obviously there are many railroad tunnels in the state. Is the criterion for listing that it be named or some minimum length, say 100 yards. The Needle Eye tunnel at Rollins pass comes to mind. —Preceding unsigned comment added by 184.96.210.173 (talk) 21:26, 16 February 2011 (UTC)[reply]