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At the northern terminus of Highway 553 at Bull Lake, the roadway continues as tertiary Highway 810. The route of Highway 810 was part of Highway 553 prior to 1976, but was downgraded to tertiary highway status in that year because of its more limited traffic usage.
Secondary Highway 607, commonly referred to as Highway 607, is a provincially maintained highway in the Canadian province of Ontario, near French River Provincial Park. It links Highway 64 to Highway 69, and mainly serves as a bypass of the intersection of Highways 64 and 69. Its total length is approximately 9.5 kilometres (5.9 mi). Its northern terminus is Highway 64, and its southern terminus is at Highway 69, near Bigwood.
Secondary Highway 607A, commonly referred to as Highway 607A, is a provincially maintained highway in the Canadian province of Ontario, in French River Provincial Park. The route connects Highway 607 to Bon Air and French River Provincial Park. Its total length is approximately 2.6 kilometres (1.6 mi). The northern terminus of the highway is Highway 607, while the southern terminus is in French River Provincial Park, 0.5 kilometres past Bon Air.
Secondary Highway 661 commonly referred to as Highway 661, is a provincially maintained secondary highway in the Sudbury District of the Canadian province of Ontario. It is a highway spur that measures 4.6 kilometres (2.9 mi) in length and connects the town of Gogama with Highway 144. It is the only provincial highway of any class that intersects Highway 144 apart from its termini and the route of Highway 560. Highway was firsst assumed by the Department of Highways, predecessor to the modern Ministry of Transportation on January 11, 1968.
It connected to the eastern terminus of Highway 560. That route travelled south to Westree along the alignment of what is now Highway 144, which was under construction at the time.
^ Ontario Department of Highways (March 31, 1968). "Appendix No. 21 – Schedule of Designations and Re-Designations of Portions of the King's Highway, Secondary Highway and Tertiary Road Systems for the Fiscal Year Ending March 31, 1968". Annual Report (Report). p. 336. Retrieved February 8, 2021.
Ontario Road Map (Map). Cartography by Photogrammetry Division. Ontario Department of Highways. 1968. § H12.
Highway 553
Highway 17 in Massey
Highway 810 at Bull Lake
Highway 607
Highway 69 near Bigwood
Highway 64 near Alban
Highway 607A
Highway 607
Highway 661
Highway 144 – Sudbury, Timmins
