Forest Hills Station will be taken back down to one track starting March 25 as part of the Casey Arborway project. The plan is the same as from when the T shut down one track from September through December. This time, instead of installing a jet fan needed for the new station entrance north of New Washington Street, the closure will make it easier to do electric work and build "underground elements" required by the massive project, MassDOT said in an advisory issued Wednesday. During the last stretch of one-track operation, the T said its plan for rush hour would not cause added delays. The September-December closure allowed the following work on the Casey Arborway project to be done:
Jet fans installed to ventilate the station.