353,100. The route was long from 1991 until 2021, with the latest extension bringing it to approximately 27 km. At its southern terminus, the route begins at Coules Court, where it continues as Brown's Line, once the southernmost stretch of Highway27. Alderwood Plaza, located on the east side of the route, has a parking lot which provides access to the highway; this is the only at-grade access along the length of the route. The four-lane road splits into a divided highway and descends below Evans Avenue. The highway weaves through a complicated interchange, providing northbound access to Evans Avenue and the Gardiner Expressway, and southbound access to The Queensway, QEW/Gardiner Expressway, and Evans Avenue. North of the interchange, the lanes from Brown's Line diverge and form the collector lanes of a collector-express system. Flyover ramps to and from the QEW/Gardiner pass over the southbound lanes and converge to form the express lanes. This collector-express system serves to divide local traffic from freeway-to-freeway traffic; the express lanes provide access between the QEW/Gardiner Expressway and Highway401, while the collector lanes provide local access between those interchanges. After crossing Canadian Pacific Railway (CPR) tracks, the freeway interchanges with Dundas Street (former Highway 5). A set of criss-crossing ramps provide access between the collector and express lanes north of this point, referred to as "The Basketweave," with the northbound express-to-collector transfer also having an offramp to Dundas Street. North of Dundas, the highway has a northbound right-in/right-out (RIRO) interchange with Gibbs Road, the first of several that provide collector lane access to minor streets that mostly connect to The East Mall and The West Mall, which run parallel with the collector-express section of the freeway. The highway passes beneath Bloor Street but has no interchange with it. A full interchange is provided shortly after with Burnhamthorpe Road, southwest of Burnhamthorpe Collegiate Institute. Across from the school, another RIRO provides access from the southbound lanes to Holiday Drive and The West Mall. Following the off-ramp, to the north, is a half-cloverleaf interchange with Rathburn Road, which provides access from the northbound lanes and to the southbound lanes. Transfers provide a second and final opportunity to cross between the express and collector lanes, or vice versa, south of the complicated Highway401 interchange. A final RIRO provides southbound access to and from Eringate Drive, after which the collector lanes diverge, and the express lanes cross the southbound