This is alist of secondary highways in Sudbury District, most of which serve aslogging roads or provide access toprovincial parks and isolated areas in theSudbury District of northeasternOntario.

Highway 553
Imperial Street, Massey Tote Road
Route information
Maintained byMinistry of Transportation of Ontario
Length	31.7 km[1] (19.7 mi)
Major junctions
South end	Highway 17 inMassey
North end	Highway 810 atBull Lake
Location
Country	Canada
Province	Ontario
Municipalities	Sables-Spanish Rivers
Highway system
Ontario provincial highways Current Former 400-series
←Highway 552 →Highway 554

Secondary Highway 553, commonly referred to asHighway 553, is aprovincially maintained highway in theCanadian province ofOntario. The highway is short, and spans only 31.7 km (19.7 mi). Its only purpose is to connect theHighway 17, theTrans Canada Highway, in the community ofMassey (township ofSables-Spanish Rivers) to logging areas andprovincial parks north of the community.

At the northern terminus of Highway 553 atBull Lake, the roadway continues as tertiaryHighway 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.

Highway 607
Route information
Maintained byMinistry of Transportation of Ontario
Length	9.5 km[1] (5.9 mi)
Major junctions
South end	Highway 69 nearBigwood
North end	Highway 64 nearAlban
Location
Country	Canada
Province	Ontario
Municipalities	French River
Highway system
Ontario provincial highways Current Former 400-series
←Highway 605 →Highway 607A

Secondary Highway 607, commonly referred to asHighway 607, is aprovincially maintained highway in theCanadian province ofOntario, nearFrench River Provincial Park. It linksHighway 64 toHighway 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.

Highway 607A
Route information
Auxiliary route ofHighway 607
Maintained byMinistry of Transportation of Ontario
Length	2.6 km[1] (1.6 mi)
Major junctions
South end	Schell's Camp atBon Air
North end	Highway 607
Location
Country	Canada
Province	Ontario
Municipalities	French River
Towns	Bon Air
Highway system
Ontario provincial highways Current Former 400-series
←Highway 607 →Highway 608

Secondary Highway 607A, commonly referred to asHighway 607A, is aprovincially maintained highway in theCanadian province ofOntario, inFrench River Provincial Park. The route connectsHighway 607 toBon 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.

Highway 661
Route information
Maintained by theMinistry of Transportation of Ontario
Length	4.6 km[1] (2.9 mi)
Existed	January 11, 1968[2]–present
Major junctions
North end	Highway 144 –Sudbury,Timmins
South end	Arthur Street inGogama
Location
Country	Canada
Province	Ontario
Counties	Sudbury District
Highway system
Ontario provincial highways Current Former 400-series
←Highway 658 →Highway 663
Former provincial highways ← Highway 659 Highway 662  →

Secondary Highway 661 commonly referred to asHighway 661, is aprovincially maintained secondary highway in theSudbury District of theCanadian province ofOntario. It is a highway spur that measures 4.6 kilometres (2.9 mi) in length and connects the town ofGogama withHighway 144. It is the only provincial highway of any class that intersects Highway 144 apart from its termini and the route ofHighway 560. Highway  was firsst assumed by the Department of Highways, predecessor to the modernMinistry of Transportation on January 11, 1968.^[2]It connected to the eastern terminus of Highway 560. That route travelled south toWestree along the alignment of what is now Highway 144, which was under construction at the time.^[3]

• Ontario secondary highways
• Roads in Sudbury District

• Articles with short description
• Short description is different from Wikidata
• Infobox road maps tracking category
• Infobox road instances in Ontario