Learn the logic behind the US interstate numbers

[Im Not Spam]

The numbers on U.S. interstate highway signs may seem random, but they can actually be an important navigation tool. This short video shows how it all works. For starters, the interstate system is divided into majors, mediums, and minors. East-west majors get double-digit numbers ending in zero, with higher numbers for the more northern routes...

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[TSB8C]

And a little known snippet - the freeway overpasses were designed with sufficient clearance for minuteman Missiles to be transported under them to move, what at that time, was or most advanced missile systems anywhere in the country they might needed.

 

[CJ]

And a little known snippet - the freeway overpasses were designed with sufficient clearance for minuteman Missiles to be transported under them to move, what at that time, was or most advanced missile systems anywhere in the country they might needed.

My step father was the program manager for the coordination of the building of the Pershing missile system by Martin Marietta Corp. He once told me about the transport height restriction, now I know why there was one.

Thanks