night. The timetable called for 92 express trains and 247 local trains a day. In addition to peak-direction express service (southbound in the morning and northbound in the afternoon), there was a "theater express" service, which ran southbound toward the Theater District for about half an hour during the evening. On December 15, 1940, with the opening of the IND Sixth Avenue Line, the D train began serving the IND Concourse Line along with the C and CC. It made express stops in peak during rush hours and Saturdays and local stops at all other times. C express service was discontinued in 1949-51, but the C designation was reinstated in 1985 when the use of double letters to indicate local service was discontinued. During this time, the D made local stops along the Concourse Line at all times except rush hours, when the C ran local to Bedford Park Boulevard. On March 1, 1998, the B train replaced the C as the rush-hour local on the Concourse Line, with the C moving to the Washington Heights portion of the Eighth Avenue Line. Kingsbridge Road was rehabilitated with new elevators in December 2014. The 2015–2019 MTA Capital Plan called for the Concourse Line's 167th Street and 174th–175th Streets stations, along with 30 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. 174th–175th Streets reopened on December 26, 2018. In June 2022, the MTA announced that the express track would be closed starting that July, with D trains using the local tracks at all times until the end of 2022. The closure would allow the MTA to conduct structural repairs to the line, including steel and concrete work; the project was to be completed in September 2024. During that time, the line would also be closed for 40 weekends, and there would be overnight work for 75 weeks. The MTA would operate a shuttle bus between Norwood–205th Street and the at Mosholu Parkway station. Provisions for expansion The Concourse Line is mostly straight north of 161st Street–Yankee Stadium, but makes a slight right turn north of Bedford Park Boulevard to end at Norwood–205th Street, with a provision to extend farther east. The original IND Second System Plan in 1929 proposed extending the line to Baychester Avenue via Burke