19. Columbus-Washington20. Cleveland-Washington21. New York-Pittsburgh
Above is the highest Pittsburgh pairing. My first thought was about the prospects for Washington-Pittsburgh. Upon further review, both Columbus-Washington and Cleveland-Washington speak to that important transportation corridor. Any connectivity to DC for those two Ohio cities will surely depend upon the Pittsburgh link.
In fact, Pittsburgh would be the HSR rail hub between the Midwest and the urban Northeast. Being the biggest city in the middle of nowhere ensures this designation. As the new economic geography of the United States begins to take shape, Pittsburgh will emerge (again) as a major center between the two mega-regions.