The Eglinton Crosstown West Extension (ECWE) is a proposed rapid transit line in the greater Toronto area that extends the current Eglinton Crosstown Line (ECLRT) further west from Mount Dennis Station to Renforth-Eglinton Station. The extension will stretch approximately 9.2 km (5.7 miles) from Mount Dennis to Renforth Drive, incorporating seven new stations and interchanges with the Mississauga Transitway at Renforth Gate. The project is split into four different contracts with the advance tunnel contract 1 (ATC1) currently under construction. The ATC1 will consist of an approximately 6.3 km (4 mile) long twin-bored tunnel of 5.75 m (18.8 ft) internal diameter with nine cross passages running from Renforth to the Scarlett area, as shown in Fig. 1.
