NEW YORK (CBSNewYork) — The push to fix the L train is moving along faster than expected.

The MTA says repairs to the East River tunnel damaged by Superstorm Sandy are about a month ahead of schedule.

Work started back in April and is expected to be finished within a year.

The original plan called for a full L train shutdown for 15 months, but engineers found a way to keep the line open during renovations with reduced service on nights and weekends.