In July 2018, workers started realigning tracks to make way for the construction of the Queens tunnel portal, which was the final major contract not underway at the time. The realignment of the three westbound Main Line and Port Washington Branch tracks, as well as the construction of a new eastbound Main Line track to replace an existing track, were completed by the end of summer 2018. The last major construction contract, a $60 million contract for the relocation of tracks in Harold Interlocking and the construction of a tunnel portal structure for Tunnel B/C, was awarded to Skanska in October 2018. Work on the tunnel structure was expected to begin in mid-2019 and be complete by mid-2021. Work on the Midday Storage Yard also progressed, and by 2019, tracks were being laid in the storage yard.