Barrie 
Ontario has expanded 18 kilometres of Highway 401 adding new lanes from Mississauga to Milton.
Credit: West Corridor Constructors
The Highway 401 section from Credit River in Mississauga to Regional Road 25 in Milton is one of the busiest and most congested highways in North America and sees approximately 180,000 vehicles on average per weekday.
The new lanes double or nearly double the previous six-lane Highway 401 and include:
- a 12-lane core-collector system from the Credit River to Winston Churchill Boulevard
- 10 lanes from Winston Churchill Boulevard to the Highway 407 ETR/Highway 401 interchange
- a 12-lane core-collector system from Highway 407 ETR/Highway 401 interchange to east of the James Snow Parkway
- 10 lanes from the James Snow Parkway to west of Regional Road 25
- one new median High Occupancy Vehicle (HOV) lane in each direction
- an additional 50 spaces at the existing Mississauga Road carpool lot (now open)
- nine new, replaced or widened bridges
Credit: West Corridor Constructors
Minister of Transportation Caroline Mulroney said, “Widening Highway 401 is another step forward in our government’s plan to build Ontario with investments in our transportation system to reduce gridlock, improve economic productivity and get drivers home to their loved ones faster.”
As per the news release, the expansion of Highway 401 and adding HOV lanes in the Mississauga and Milton area are among the more than 100 actions identified in the government’s Connecting the GGH: A Transportation Plan for the Greater Golden Horseshoe to address gridlock, create more prosperous communities, and support the rapid population growth expected for the region.
