Umblehoon wrote:... and is now the planned exit of Roosevelt Blvd trains in the extension up that way.
As has been pointed out, the upper level of the BSS is mainly used as a turnback for locals. However, if the Roosevelt Boulevard proposals ever see fruit, the upper level tracks will be partially used. The outer tracks will be ramped down to the mainline, while the (current) local tracks
will be leads to/from Roosevelt Boulevard. Obviously, the SB tracks will tunnel under the mainline express tracks. The middle tracks on the upper level will stay put, to await either local turnbacks, or another extension proposal. However, there will be another problem: the tracks on the upper level are almost level with the Port Richmond Branch. Though there
are some ideas floating in my head about those possible extensions, there will be the problem of getting by the Port Richmond Branch.-MTG