Please be advised of the following traffic impacts.

We apologize for any inconvenience disruptions may cause. Motorists are advised to plan alternate routes and drive according to conditions, slow down, stay alert and in control.


» Long term temporary lane shifts from Regional Road 25 to the Credit River

Start Date: Monday, March 15, 2021
End Date: Thursday, April 15, 2021

Time: 24 Hours a day

Long-term temporary lane shift along Highway 401 Eastbound and Westbound from Regional Road 25 to Credit River, 24 hours/day for approximately 18 kilometres.

Over a four-week period, WCC will change the traffic configuration throughout the 18-kilometre Highway 401 construction zone. This change enables works crews to continue construction on the project in a safe manner.

The existing traffic lanes will be shifted two meters towards the centre median. A 0.5-meter inner will be maintained. Temporary traffic control devices such as signage, barricades, work zone barriers, safety fencing and other markers will be erected.

These traffic shifts will be rolled out in stages over a four-week period. Due to the staged nature of the work, we advise motorists to be aware of signage and changes to lane configuration throughout the corridor and to follow posted construction signage.

• All work is weather permitting.
• Work may not take place on all dates listed above
• Detour routes may be in place


Lane reduction on Derry Road (northbound and southbound directions).

» Long term temporary lane reductions, on Derry Road between Argentia Road and Syntex Court.

Start Date: Monday, June 15, 2020
End Date: Tuesday, June 8, 2021
Start Time: 00:00 to 24:00

Derry Road reduced from 6 lanes to 4 lanes (2 lanes northbound and 2 lanes southbound) for approximately 1 year. Closure required for bridge work at Highway 401 overpass structure.

• Shift is required as part of staging plan to facilitate construction.
• All work is weather permitting.
• 24 Hours a day.
• Ramp access will be maintained at all times.
• Minor traffic disruptions anticipated.


Northbound Creditview Road/Creditview Bridge

» Temporary Lane Closure

Date of Closure: December 2, 2019
Date of Re-Opening: August 2021
Start Time: 00:00AM


The Creditview Road northbound lane will close at Argentia Road. Northbound drivers will be detoured as follows:

• West on Argentia Road
• North on Mississauga Road
• East on Derry Road
• South on Creditview Road

Construction of the Highway 401 Expansion Project and the replacement of the Creditview Bridge requires a lane closure and detour of Creditview Road northbound traffic via Mississauga Road utilizing Argentia Road and Derry Road. The detour is
approximately 4.4km long. Southbound traffic will continue to use the existing bridge to cross Highway 401 during construction. The planned opening date for the new bridge is August 2021 where access over Highway 401 will be restored.

Hours of Work Work on the bridge will take place between the hours of 7:00 AM – 5:00 PM.
Pedestrians In order to complete the work in a safe manner, Creditview Bridge will be closed to pedestrians.
Cyclists Construction staging safety will require the bridge being closed to cyclists.
Traffic Impacts Traffic detour will be in place. Motorists are reminded to abide by traffic/construction posted signs in local areas to ensure the safety of workers and safe travel of all local road users. Efforts have been made to manage traffic in the area for the safety of all road users, residents and workers. Signage will be put in place.

Detour route of the Creditview Bridge temporary northbound lane closure

• All work is weather permitting.
• Work may not take place on all dates listed above.
• Detour routes may be in place.

Please contact the Project telephone line (24 Hours) at 1-888-619-1665 or Email to report a concern.

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