[Steven Scharf]

According to the wiki page it should have had a odd number pre-fix which is what I thought. I reading wiki on interstate highway designations I saw that a 2 mile connector road in Falmouth Maine to the Maine Turnpike is designated as 495 (unsigned). It also does not follow the protocol, but since I-295 goes under it they numbered something​ else. The only people in Maine that know it is 495 are the traffic engineers.

[PAR35]

495 (unsigned)495 (unsigned)

There is an anonymous 1.4 mile long interstate in Dallas - I-345. The joke is that I-45 dead ends into it, and it also has a US highway designation. It must have been some sort of corrupt crony capitalist payoff involved, as they could have extended the 45 designation another mile and a half, or just left it US-75. Or done the sensible thing and extended the I-45 designation all the way to the Red River.