The 2015–2019 Metropolitan Transportation Authority Capital Plan called for the Sixth Avenue Line's 23rd Street and 57th Street stations, along with 31 others, to undergo a complete overhaul as part of the Enhanced Station Initiative. Updates would include cellular service, Wi-Fi, USB charging stations, interactive service advisories and maps, improved signage, and improved station lighting. The renovations at both stations were supposed to last from July to December 2018. The renovations were conducted under a $124.9 million contract that also included the renovation of the 28th Street station on the IRT Lexington Avenue Line. 23rd Street reopened ahead of schedule on November 29, 2018, while 57th Street reopened on December 19, 2018.