Ontario Highway 549

Ontario Highway 549, commonly referred to as Highway 549, was a provincially maintained secondary highway in the Canadian province of Ontario. This highway connected former Highway 17 (Regional Road 55) in Whitefish to Lake Panache. The route was assumed along with many other secondary highways in 1956 and remained unchanged until the early 1980s, when it was decommissioned as a provincial highway and transferred to the newly formed Regional Municipality of Sudbury. Today it is known as Greater Sudbury Road 10.

Route description
Highway 549 followed what is now Sudbury Municipal Road 10 (Panache Lake Road). It travelled through a largely forested region between Lake Panache and what was then Highway 17, but is now known as Municipal Road 55. At Lake Panache, the route began near a marina and travelled north through thick forest, meandering east and west to avoid lakes and rivers. At one point along the route, it briefly passed into the territory of the Whitefish Lake First Nation. It encountered Municipal Road 55 just west of Whitefish and just east of the current route of Highway 17.

History
Highway 549 was first assumed by the Department of Highways in 1956, along with several dozen other secondary highways. It was likely maintained as a development road prior to that. The route remained unchanged from then until 1982 or 1983, when it was decommissioned as a provincial highway and transferred to the Regional Municipality of Sudbury. The region redesignated the road as Sudbury Regional Road 6, but subsequently renumbered it as Regional Road 10 within the next two years. It remains this way today.