Building a cross platform transfer at grand st with 2nd/6th Ave crossovers and rerouting the route south of Chatham square to merge with the JZ at Chambers St would present additional operational flexibility.
- it would allow B/D trains coming from 6th ave to access Montague.
- allow the T to bypass the midtown portions of 2nd ave due to construction/stall train, travel via 6th ave to lex 63st, where it can continue from 72-125st.
- provide the T with transfer options at Fulton st.