As part of the 2010 Winter Olympics bid, the British Columbia provincial government authorized an upgrade of the highway to accommodate greater traffic loads, widening the highway and adding a concrete divider. Starting in 2002 a large section was upgraded between Squamish and Whistler that had already seen major improvements during the 1980s. The Sea to Sky is a freeway from the interchange with Highway 1 to the at-grade intersection with Lawrence Way. After that, there are sporadic interchanges and at-grade intersections. It is mostly a divided highway all the way to Lions Bay and through Squamish.