According to the Sound Transit Central Link email alerts:

Starting Monday, Dec. 7 and lasting until Dec. 30, Central Link light rail will operate every 15 – 20 minutes between 7 p.m. and 1 a.m. due to track maintenance. Maintenance will also temporarily close some platforms on one side of the track. If your normal boarding location is closed, please board both northbound and southbound Link trains at the opposite platform.

We apologize for the inconvenience. Thank you for riding.

This shouldn’t affect anyone who is riding during the day. Evening socialites, late commuters or off-business-hours folk will likely have a longer wait for their train.