Southwest and Southeast Bypasses

Southwest Bypass / Southeast Bypass
Southwest and Southeast Bypasses highlighted in red
Route information
Part of Highway 17 / Trans-Canada Highway
Maintained by Ministry of Transportation of Ontario
Length	24.3 km[1] (15.1 mi)
Southwest Bypass
Length	13.3 km (8.3 mi)
West end	Municipal Road 55
Major intersections	Municipal Road 80
East end	Highway 69
Southeast Bypass
Length	11.0 km (6.8 mi)
West end	Highway 69
East end	Municipal Road 55
Location
Country	Canada
Province	Ontario
Major cities	Greater Sudbury
Highway system
Ontario provincial highways Current Former 400-series
Greater Sudbury Municipal Roads

The Southwest Bypass and Southeast Bypass are two separately-constructed contiguous roads in the city of Greater Sudbury, in the Canadian province of Ontario, which form a bypass around the southern end of the city's urban core for traffic travelling on Highway 17, a portion of the Trans-Canada Highway. Most of the route is a Super two road with at-grade intersections, with the exception of short section of divided freeway at an interchange with Highway 69. Along with the Northwest Bypass from Lively to Chelmsford, the roads form a partial ring road around the city's urban core.

Although proposed as early as 1967, construction of the Southwest Bypass, connecting Highway 17 near Lively with Highway 69 south of Sudbury, didn't began until mid-1973. It opened as a two-lane route in late 1974, with no interchanges along its length. A four-lane bypass of Highway 17 between Lively and Whitefish was built between 1976 and late 1980, connecting to the Southwest Bypass at a new interchange with what is now known as Sudbury Municipal Road 55. Construction of the Southeast Bypass, connecting Highway 69 with Highway 17 west of Coniston, began in 1992 and was opened on November 9, 1994. Since then, while numerous proposals and studies have been undertaken on widening the route to a full freeway, only an interchange with Sudbury Municipal Road 80 (Long Lake Road) has been built, opening in 2008.