ontario highway pronounced commonly referred highway series highway canadian province ontario primary north south route central portion highway connects downtown queen construction highway began section opened road geneva street december followed southward extension road late route later extended south super road highway construction began connect freeway completed late construction route resumed connecting route completed mid-1990s construction resumed highway expand remaining lane sections lane divided freeway existing route southbound lanes new freeway southern terminus converted roundabout remaining grade intersections rebuilt interchanges route description unique series highway lane sections grade rail crossing highway heavily travelled volumes drop considerably south city speed limit highway varies mph mph patrolled designation begins roundabout immediately west beneath lane divided road northeast travels parallel canal golf courses separate canal highway passes west west crosses railway spur grade railroad meets parkway road newly constructed interchange soon crosses channel canal replaced current pass 1970s highway curves northwest passes thick forest meets newly built interchange highway rebuilt grade separated interchange returns northward orientation passes final grade intersection regional road north port robinson road highway widens lanes median opens centre making controlled access freeway forests break freeway continues straight north agricultural area interchanges highway regional road road freeway crosses infamous connection crimes curves northeast passes beneath regional road road complicated interchange descends enters highway twists frequently entering mile creek valley south complicated interchange avenue geneva street curving west valley freeway features lower design speed reduced speed limit mph passes beneath high level paul street bridge crosses creek intersects fourth avenue exiting creek valley freeway parallels fourth avenue kilometre gradually curves north ends north merging history planning highway began early minister highways presented streets report march outlining highways needs province years planned routes freeway link highway travelling alongside canal route studies planning underway future route designated highway despite construction beginning section geneva street opened december followed years later extension south road opened november early 1970s highway extended south super north curved west road highway extension included road interchange intersection opened june construction began section highway geneva street work included construction large bridges widened curving structure single point urban interchange ontario located airport parkway ottawa original design plans highway called section follow creek valley distance east road instead alignment moved west city streets completed advance construction ramps bridges work finished late grading contracts awarded entire extension paving took place summer route opened traffic october work extend future southbound lanes highway east main street began fall including eastward extension construction bridges carry extension old canal began completed fall work began grade road extension highway highway extension completed mid-1990s expansion series highway featured grade intersections lane sections original intention twin lane section shortly constructed 1970s plans deferred multiple times project resumed early 2000s phase opened traffic extending lane highway previous convergence south road point north port robinson road minister transportation announced section road converted freeway work includes roundabout replace current southern terminus work road began september scheduled completion august construction began groundbreaking ceremony roundabout opened traffic september featuring central island despite requests local politicians plans extend highway port time exit list northern terminus tied southern terminus relocated proposals result exits numbered north south entirety highway located
Ontario Highway 406