The NAFTA superhighway[1][2] is a term sometimes used informally to refer to certain existing and proposed highways intended to link Canada, Mexico, and the United States.
[3][4][5] Although the term has not been used publicly by governments in an official policy context, there are some dissident beliefs about this appellation that are associated with nationalist conspiracy theories regarding alleged secret plans to undermine U.S.
Ontario Highway 402 and other motorways in the Windsor-Quebec City Corridor in Canada might be viewed as an extension of this NAFTA superhighway to the northeast.
Further east, it links Chicago and the Windsor-Quebec City Corridor that has its western terminus at the Port Huron border crossing.
The importance of the Port Huron border crossing is enhanced by the fact that I-69 connects to the Windsor-Quebec City Corridor at the same bridge as I-94.