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Alaska is the only state that does not have formal Interstate roads. Hawaii (island of Oahu) was highways designated H1, H2, and H3 that I believe are part of the "interstate" system (for govt budget purposes, etc). All of the lower 48 states have interstate roads running through them. Among the lower 48 with the fewest miles of Interstate roads, I'm guessing it would be Delaware, then Rhode Island. If you are looking for some ratio of interstate miles vs square miles of state, I couldn't begin to guess...
Hmm. Well, if you want my two cents worth, look among the western states. states with low populations tend to have the fewest interestates running through them. interstates promote population growth.
Delaware only has one interstate highway, I-95 and it goes through teh norhternmost tip only serving Wilmington. Smaller states in general would have smaller mileage of interstates, of state routes, or U.S> highways, or parkways, or driveways
So I guess Connecticut and Rhode ISland too.
Hawaii technically has no Interstates, though there are Interstate grade highways.
I love the freeways in Illinois outside of Chicagoland! It's a great system. The expressway system in Chicagoland is decent when the traffic is mostly gone from it.
I have spent many summers in Michigan's Upper Peninsula, driving two lane roads and getting bugs on the windshield. It's just not for me.
The states with the BEST interstate systems are Illinois and Michigan, despite the condition of the roads in many places.
California, Montana, Texas, etc probably have the most miles of interstates, right?
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