Subway riders on the 4, 5, and 6 trains will face significant service disruptions over two consecutive weekends this month as the MTA replaces tracks along the heavily-traveled Lexington Avenue line, the agency announced Tuesday. Service south of Grand Central–42nd Street will be suspended from 11:30 p.m. Friday, Aug. 15, through 5 a.m. Monday, Aug. … Continue reading Subway service changes: Track replacements to seriously impact 4/5/6 lines for two August weekends