The MTA has proposed a number of alternative options for commuters. Many will likely find themselves trying to squeeze on to already crowded J, M, Z and G trains, and there will likely be some sort of shuttle bus service between Brooklyn and Manhattan via the Williamsburg Bridge.
None of it will likely be a pleasant experience for commuters.
A little further up the M line, the MTA is currently undertaking another pretty substantial repair project. The first phase lasted for two months, and shuttle buses were used to make up for the lost train capacity.
Now the project is in the longer second phase, which will take another seven months. A shuttle bus is operating between the Myrtle-Wyckoff Avenue and Myrtle Avenue-Broadway stops, while two trains in each direction are still operating between Metropolitan Avenue and Myrtle-Wyckoff.
According to commuters, however, that's not enough trains. Councilwoman Elizabeth Crowley has written a letter to MTA chair Joe Lhota requesting that extra bus service be provided to make up for the long wait times on the section of still-operational track.
Seven months, while not nearly as long as 15, is still a long time to deal with lengthy delays.
Why does this bear watching for commuters in North Brooklyn? It will be notable to see how the MTA reacts to issues on the fly, as the project on the border of Ridgewood and Bushwick is a microcosm of the problems that commuters will face during the L train shutdown.
How quickly – and effectively – will the MTA be able to react?