| | List of New York City Subway inter-division connections - Wikipedia, the free encyclopedia |
 | | October 29, 1989: connecting tracks between IND 63rd Street Line and BMT 63rd Street Line (not generally used for revenue service unless a re-route of the R is required north of 57th Street on the Broadway line). |
 | | Crossover tracks between northbound IRT Flushing Line and BMT Astoria Line at Queensboro Plaza (the Flushing Line's only connection to the rest of the system, originates from when both lines north of Queensboro Plaza were dual-operated) |
 | | Lines - Services- Stations- Terminals- Inter-division connections - Inter-division transfers - Yards |
| en.wikipedia.org /wiki/List_of_New_York_City_Subway_inter-division_connections (562 words) |