Limits of Existing Four Laning
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Four laning has progressed northward in stages from Port Severn in Simcoe County to its current limit at the Musquash River, 8.5 km south of MacTier.
This includes a new 4 km portion that was recently completed from Muskoka Road 32/38 northerly to the Musquash River.
On November 1, 2001 the newly constructed Parry Sound by-pass was opened.
In October 2002 the new 4 km four lane section from Highway 141 to Badger Road was opened.
As Highway 69 is four laned from the south, it is being re-numbered Highway 400.
In addition, a 6 km stretch of urban four laning currently exists south of Sudbury.