sentences:  On Scugog Island now, the highway first passes Island Road (Durham Regional Road 7), which leads to Great Blue Heron Casino and the Mississaugas of Scugog Island reserve, then curves southeast and enters the Osler Marsh.It once continued east along what is now Reader Road and curved southeast at the end of that road.The modern route, constructed when the causeways were reinforced in the 1960s, lies south of the original route.