Interstate 59

[froggie]

^ North of Dunlap, no.  Nevermind that the 24/111 interchange in Cookeville is a diamond with intersections immediately adjacent to it.

[The Ghostbuster]

The canceled Interstate 175 between Chattanooga, TN and Lexington, KY probably should have been proposed as an extension of Interstate 59. I think that would have been a better number than making it 175.

[froggie]

^ I wouldn't even call "I-175" cancelled.  It was nothing more than an idea floated by Kentucky officials that managed to get some money for a feasibility study in 2002.  Clearly it didn't go very far.

[adventurernumber1]

Though it would have its challenges, that I-59 extension is an intriguing idea that I had never heard of or thought about before, especially since a good bit of US 27 and TN 111 in the area are already limited-access. Although, it is probably not needed, and upgrades to parts of TN 111 could suffice if necessary.