Scarborough Subway Tunnel at 75% | Toronto News

The Scarborough Subway Extension is roaring ahead, hitting 75% completion on its massive 8-kilometer tunnel—the widest in Canada at nearly 11 meters wide. Built as a single bore, it’ll carry trains in both directions through a cavernous tunnel big enough to fit a three-story building. To keep construction flowing, engineers installed a 108-meter “California Switch” to shuttle materials seamlessly. Though riders won’t see it until 2030, this project will replace the aging Scarborough RT, linking Kennedy to Sheppard and McCowan—and reshaping transit for the future. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/fcde24125a3146ed