Hmmm, interesting topic. Below is a current map from the
North American Supercorridor Coalition (NASCO) site which shows the 4 major North-South economic corridors (Pacific, Canamex, Mid-Cont and Eastern Seaboard) and the west > east corridors (Asia-Pacific Gateway) originating from the two BC ports and SeaTac, that NASCO is promoting the development of, and lobbying for.
Keep in mind the US also has other established east-west corridors, particulalry from Long Beach,CA.
Note the
blue cities are the major sea/river ports. The
red cities are the major Inland Ports and are members off the
North American Inland Ports Network (NAIPN) - which NASCO founded in 2003.
Note that Winnipeg is the only major Canadian Inland Port being promoted at this time by NASCO/NAIPN.