I grew up in guysborough NS, and have had the pleasure of performing at, and attending the Stan Rodgers folk festival. From my understanding, the song is about the rail system that was put in place but a decision was made st the time by either the government or rail company to halt operations in the area, hence there’s no train to guysborough. Concrete pillars are dotted throughout the county where rail bridges were to be built, but it never happened. People hoped that new prosperity would come to the region with a rail line, so I’d say a lot of locals were disappointed that the rail project was ended prematurely. If you walk the section of the Trans Canada trail in guysborough, you end up walking kilometre after kilometre on what would have been the rail line.