Every summer, SEPTA closes the trolley tunnel to make repairs, conduct track and electrical work, and thoroughly clean tracks and stations. This year’s trolley closure is longer than normal, lasting until Monday, August 11 at 6 a.m., because PennDOT is also doing work in the tunnel. This closure will reduce the number of outages over the rest of the year. After this trolley tunnel closure, there will be no major trolley tunnel closure in summer 2026. 

During the Trolley Blitz, routes 10 (T1), 34 (T2), 13 (T3), 11 (T4), and 36 (T5) will bypass the tunnel and be rerouted to 40th & Market Streets. From there, travelers can transfer to the Market-Frankford line (L) or 21/42 buses for connections to and from Center City. For more information, visit https://wwww.septa.org/news/2025-trolley-tunnel-closure/.