West of Binghamton, NY 17 is still "Future 86".
NY 17 crosses briefly (for under a mile) into Pennsylvania. The crossing is only marked by this sign and another indicating that we're crossing again.
Rob's picture: NY 17 still has a few at-grade intersections, so it's still "Future 86" until we get past Horseheads.
West of Corning, NY 17 is now also I-86. I-86 shields are added to many signs like this one.
The STE is a lot of routes here.
Rob's picture: The terrain of the Southern Tier.
Rob's picture: More of the Southern Tier.