Location: NY 30 and NY 122, Constable, Franklin Cty Immediately as 30 joins 122, it splits to continue north. Follow 30 north to Canada.  N to QC-138/QC Int’l Boundary, S to US-11  W to NY-37, E to US-11  W to NY-37, E to NY-30  W to NY-30, E to US-11