Drivers across Durham Region should prepare for significant travel delays as the Ministry of Transportation implements a sweeping schedule of roadwork on provincial highways. Focusing on May 29, 2026, the maintenance plan includes 31 distinct closures affecting major arterial routes throughout the area. These operations are scheduled to occur during nightly, daily, and continuous windows. Commuters are advised to expect congestion, particularly during heavy traffic periods, as construction crews execute these multi-phase improvements to regional infrastructure. As the summer travel season approaches, the MTO is accelerating efforts to ensure the road network can handle increased volume, making these temporary inconveniences a necessary step toward long-term reliability.
In Pickering, Highway 401 will experience substantial lane restrictions near the Brock Street interchange. The westbound express lanes between Brock Road and the Toronto border at Morningside Avenue face a series of alternating daily closures running from late May through early June. One alternating lane is closed from May 19 until June 30. Furthermore, the westbound collector lanes between Whites Road in Pickering and Port Union Road in Toronto will see a continuous right lane closure overnight on May 31. Eastbound express traffic will also face lane reductions at Brock Road in early June. Drivers using this corridor should be aware that the shift in traffic patterns often leads to bottlenecking, particularly during rush hours.
Ajax residents will encounter disruptions on Highway 401 near key municipal access points. Nightly work is set to affect both directions of the highway in the vicinity of Church Street, with two alternating lanes closed in both eastbound and westbound directions from June 1 to June 5. Additionally, the stretch near Westney Road will be impacted by nightly westbound lane closures during the same period. These overnight restrictions, occurring between evening and early morning hours, will likely result in slower-moving traffic for late-night commuters. Local businesses and residents relying on these accesses are encouraged to plan for extra travel time.
Oshawa’s highway infrastructure is a focal point of the current construction schedule, particularly around the Stevenson Road and Simcoe Street interchanges. Highway 401 eastbound travelers will face the closure of two right lanes in this corridor on two separate occasions: from the evening of May 25 until the morning of May 29, and again from May 31 to June 5. Alternating lane closures are also active daily on both eastbound and westbound routes between Harmony Road and the Highway 35/115 junction in Clarington, concluding on May 29. The Stevenson Road and Simcoe Street areas are critical nodes for Oshawa’s industrial sector, and these closures are timed to minimize disruption to commercial transport where possible.
Whitby is seeing multiple on-ramp and ramp closures affecting access to the 400-series highways. The Highway 401 eastbound on-ramp at Brock Street is scheduled for nightly right lane closures from June 1 to June 6. Similar overnight restrictions will impact the Highway 412 northbound off-ramp and the eastbound on-ramp at Highway 412 during the transition from May to June. Motorists utilizing the Highway 407 East Toll Route should note a brief right lane closure at Anderson Street and Thickson Road overnight on May 31. These ramp closures are particularly impactful for drivers transferring between the 401 and the tolled 407, necessitating precise timing for those heading toward Toronto.
The eastern reach of the region, encompassing Clarington and connecting routes, remains under active construction. Highway 35/115 southbound is subject to daily alternating lane closures between the highway junctions until the afternoon of May 29. Extending beyond the immediate region, long-term construction continues on Highway 35 northbound between Boundary Road and Telecom Road in Pontypool until December 23. Additionally, Highway 12 northbound, linking areas towards Ramara and Orillia, is undergoing nightly alternating lane closures that extend into the first week of June. The extended work on Highway 35 near Pontypool highlights the scope of the provincial strategy.
Motorists are strongly advised to stay informed through real-time traffic services before embarking on their commutes. The Ministry suggests checking the Ontario 511 website or mobile app for the most up-to-date information on lane statuses and unexpected delays. Furthermore, drivers are reminded to exercise caution when navigating through construction zones, adhering to posted speed limits and remaining alert for workers and heavy machinery on the roadway.
As these infrastructure projects progress into the summer months, the variety of scheduled closures will require careful route planning by local motorists. The extensive work aims to improve the long-term safety and efficiency of the provincial highway network. Drivers navigating Durham Region are encouraged to monitor local traffic updates and adjust their travel schedules to accommodate the ongoing roadwork expected to continue through the end of June. While the immediate impact involves slowdowns and detours, the completion of these projects promises a smoother, safer driving experience for the thousands of residents and visitors who traverse Durham’s highways daily.
