It's years and years away if a prosperous human growth continues. And we'll extend outward and upward, hopefully by then with agronomics intertwined with our urban existences and retrofit eco-friendly efficiencies.
Build upward or outward?
I-70 currently ends just south and west of a national forest area in Utah.
Let us say this:
Extend Interstate 70 through the heart of a newly built town called (Norsulphurdale, WesDale???) Wesdale sounds easier. Zoom in on a Utah map.