THE BRONX - Detours on the D train could mean a longer commute this week for some Bronx straphangers.

The MTA's FASTRACK program will shut down service on the D line in both directions between 161st Street-Yankee Stadium and 205th Street. It will begin at 10 p.m. and last until 5 a.m. each night through Friday.

Riders can take the 4 train at nearby stations as an alternative, and there will be free shuttle buses between the 205th Street D stop and the Mosholu Parkway 4 train station.

The citywide FASTRACK program shuts down parts of various subway lines during overnight hours for one week at a time while workers complete necessary track work and maintenance.