Notices of Construction

Residents are also able to view construction notices and road closures at

Durham Region Works Department: Lake Ridge Road (Regional Road 23) & Regional Road 12 / Pefferlaw Road, Township of Brock & Town of Georgina

The Regional Municipality of Durham will be reconstructing the intersection of Lake Ridge Road (Regional Road 23) and Regional Road 12 / Pefferlaw Road into a single lane roundabout. The work includes re-alignment of all four approaches to the intersection, roadway illumination, hot mix paving, concrete curb & gutter, median islands, pavement marking and landscaping.

Construction Schedule
The Region’s contractor, Primrose Contracting Inc., will commence work the week of July 8 and expects to complete the work by November 15. Please note that unfavorable weather conditions may influence the work schedule.

Road Closures & Lane Restrictions
Lake Ridge Road south of Regional Road 12 is scheduled to close on July 26 for approximately six weeks. Lake Ridge Road north of Regional Road 12 is scheduled to close on September 5 for approximately six weeks. Traffic will be diverted via signed detour routes. During the road closures, the intersection will operate as a three-way stop.

Daily lane restrictions will be minimal but are permitted at certain times throughout the duration of the project. Drivers should expect delays within the construction limits.

The Region realizes that the construction work will be disruptive and will complete the work as quickly and efficiently as possible. Drivers are asked to exercise additional caution for pedestrian, cyclist, and construction worker safety.

The dates shown are tentative and may change based on the contractor’s schedule.

If you have any questions or concerns, please contact one of the following staff members listed below from the Regional Municipality of Durham, Works Department:

Warren Geer, C.Tech. Project Supervisor 905-668-7711 ext. 3442

Steve Jones Project Inspector 905-260-3090

Concession 1 (Thorah)

Please be advised Concession 1 (Thorah) will be closed between Sideroad 18A and Thorah Sideroad from Wednesday April 10, 2019 to Friday November 15, 2019 (approximate time frame) for the purpose of bridge reconstruction.

Emergency access will be available from highway 12 east to C1835 Concession 1 (Thorah) and from Thorah Sideroad west to C1850 Concession 1 (Thorah)

Parks Canada - Replacement of the Talbot Dam - Trent-Severn Waterway

The Government of Canada has announced more than $615 million of work on infrastructure across the Trent-Severn Waterway and its reservoir lakes. As part of that work, the Talbot Dam in the Townships of Ramara and Brock near Gamebridge is being replaced.

The contractor has made good progress on the dam. Phase one of the south sluice construction is nearing completion and the contractor will work through the fall and winter to install the coffer dam for the north sluice. Work will begin to reconstruct the north sluice in May of 2019. The dam reconstruction will be completed between October and December 2019, with the possibility of minor site restoration and landscaping in spring 2020.


  • The original Talbot Dam was completed in 1907 and its location is upstream of Lock 39 in the historic Talbot Canal section of the Trent-Severn Waterway. The original dam had lived out its useful life and is being fully replaced in the same location.
  • Outflows from the dam diverge from the canal cut and go to Lake Simcoe via the Talbot River. This area is import for Walleye and White Sucker. Parks Canada’s water management accommodates the spring spawn for these species and the construction project has been designed to continue these measures by building one sluice of the new Talbot Dam at a time.

How to stay informed

If you would like to receive email updates about this or any other Parks Canada project, please email and include a project description in the subject heading. Or check out new information at