Falmouth Spur advance sign
I-295 used to be a shorter route, leading only from I-95 in the south to the Falmouth Spur, which was also part of I-95. A long segment of the Maine Turnpike was I-495.
In 2004, Maine rearranged the route numbers to clean things up. The Maine Turnpike is now I-95 throughout. I-295 is longer. No highways take turns at the Falmouth Spur; and the Spur is now "secretly" designated I-495, but signed only as above.