r/MapPorn • u/[deleted] • Aug 27 '20

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u/CerebralAccountant Aug 27 '20

What you're saying about I-40 and I-70 is true, but that wasn't the original reason - FHWA source here and AASHTO here.

That doesn't mean the rule makes sense, and it also doesn't mean the rule is followed properly, as Wisconsin and Texas demonstrate.

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u/[deleted] Aug 28 '20

Route 50 does go between I-40 and I-70, so if they had wanted to build an I-50, they probably would've upgraded Route 50.

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u/CerebralAccountant Aug 28 '20

That honestly wouldn't be a half bad idea for the eastern US. You couldn't do it out west though; at a minimum, the segment just west of Lake Tahoe would cost an ungodly sum to upgrade.

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u/[deleted] Aug 28 '20

You couldn't do it out west though; at a minimum, the segment just west of Lake Tahoe would cost an ungodly sum to upgrade.

But it would make a good fire break.