Between 1928 and 1952, the PGE interchanges were difficult—at Squamish there was a barge connection to North Vancouver and the rest of the North American railroads; after 1952 the PGE could connect with CN at Prince George. Connections were made to other railways when the railway completed its Howe Sound link in 1956. The main connection to the North American rail network was in North Vancouver, where there was a connection to CN. There was also a rail connection to deep-sea terminal operator Vancouver Wharves, and some interchange occurred with the Union Pacific Railroad through the Seaspan railbarge link between North Vancouver and Seattle, Washington. The railway also interchanged with CN at Prince George, and with Northern Alberta Railways (acquired by CN in 1981) at Dawson Creek. CN's line between Dawson Creek, British Columbia, and Hythe, Alberta, fell into disuse in 1998, but CN agreed to reopen it as a condition of purchasing BC Rail. However, as of 2010 the line between Dawson Creek and Hythe is still disused.