Construction of this interchange and its related roads and highway ramps began in 2008 and is expected to complete in late Spring 2013. The City has awarded Phase 1b of the Leigh Road Interchange to Windley Contracting Ltd. Work is anticipated to start in mid-September on site and will include construction of the northbound offramp, south bound onramp and McCallum Road connection from existing Spencer Road north of the TCH to future Bear Mtn Parkway.
Upon completion in 2013 the interchange will open with three ramps in use(the southbound offramp is not currently being constructed). The signal light at Spencer Road will come out at the Trans Canada Highway when the interchange opens. Traffic on Spencer Road northbound will no longer cross the TCH.