on Mon Oct 8 14:38:48 2018, in response to Re: Myrtle Avenue EL, posted by Stephen Bauman on Mon Oct 8 11:51:41 2018.
As has been mentioned before, unlike the unrebuilt portions of the Fulton St el Myrtle could hold just about anything the BMT had much like the Jamaica Lin structure between Alabama Av and Cypress Hills although that structure was eventually strengthened, I believe in the 1980s. The problem with the Myrtle structure was that since it was slightly lower than the Jamaica Line structure, the area at the ends of the stations had to have a different type of trusswork to clear the stairways to the street making adapting the structure for 10 ft wide cars prohibitively expensive. I suspect that was the main reason that even under the dual contracts, there were no plans to connect Myrtle to the subway but rather truncate it at Flatbush Ext with a new terminal and a transfer to the subway station at Myrtle Av (Gold St). If there had been sufficient funds to do so, I suspect that in order to make Myrtle able to fit 10 ft wide cars, all the stations between Bway/Myrt and Bridge St would have had to be rebuilt as outside platform stations replacing the island platforms completely. Of course, probably not all the stations would have been replaced with some eliminated entirely or even relocated Chicago style