The is going to be a Dyre shuttle one hour earlier in the evening. Also, the two reverse peak trips to 241 St in the morning are also cut back to Gun Hill Rd and will be running express to Gun Hill Rd instead of local north of E 180 St to 241 St
Bus bunching on the Bx36 and Bx39, can happen anytime of day, middays, rush hours, even weekends. The lack of late night service on the Bx5 is another issue that should be brought up. MTA even proposed it in 2007. Bx39 service to/from Clason Point should be extended to at least 1am 7 days a week.
That's a service cut on the rest of the to go to 20 minutes between 10-11pm, just run 12-15 minutes to Far Rockaway and start the Lefferts shuttle after the stops running.
MTA would likely cut the weekend all together and just extend the weekend to Utica / New Lots Avenue, good for weekend late night / riders, bad for weekend daytime / / riders.
The doesn't directly connect to the W20 bus and it is a longer trip for those coming from the Bx10, Bx16, Bx34, and W20 to get to the than the . Also the is also more frequent than the (which now runs 12 minutes on some weekends because of trackwork).
MTA already does this sometimes on Monday mornings after a Clark Street Tunnel shutdown. service runs Flatbush - 241, but there are still trains running South Ferry - Dyre after 5am, so from about 5-7am there may be two different services running N/B from Chambers St to E 180 St. Also the is running N/B as a Dyre shuttle while trains are still running to Dyre. Guess people are used to this happening during the "transitional service period". MTA would rather run two different trains than run the to/from Bowling Green after 4am (like they used to do in 2011)
Another option would be to run half of the trains as trains to South Ferry to maintain the service between E 180 St and 149 St - Grand Concourse, this way the can be reduced on Lexington Avenue and there would still be the same amount of service in the Bronx. MTA did this on a Friday evening once by suspending all service from 8:30pm to 10:30pm S/B and from 10:00pm to 12:00am N/B and ran the to both 241 St - Flatbush Ave and Dyre Av - South Ferry at the same time. The resumed service when the and swapped terminals though, the just went to/from Dyre early.
The has to run at 5 tph when the is replacing the as 241 St and Flatbush Av can't have 20 minute headways. The has to run local when this happens though
It is either:
7.5 / 3 / 7.5
or
7.5 / 5 / 5
The Bx30 would also have to run on Fordham Road (and would have to swap with the Bx16 past Conner Street) for the 60/61/62 to be completely closed door
The alternative is to cut the to 12 minute headways and run the local to keep the running normally during GOs. They did this when the Clark Street Tunnels were closed. One weekend the was cut back to a Pelham shuttle at 125th and the and went local to Brooklyn.