Share this page Print

Douglasdale and McKenzie Lake Slope Stability Project

Project update - November 20, 2017

We are working on a long-term solution to address the slope movements on the escarpment east of the Bow River adjacent to the communities of McKenzie Lake and Douglasdale. These movements have caused damage to The City's pathway along a 3.5 km section.

As part of a priority restoration of the slope and pathway, a long-term solution on the
most urgent section, which includes a retaining wall adjacent to the pathway has been designed and procurement has been completed. The contractor (Pomerleau) plans to begin construction of a retaining wall​ adjacent to the pathway of this section later this year.

For safety reasons, fencing has been set up to seal off the construction area. Please follow the detour signs and do not access either the closed area or the slope below it.

Repair work in 2016 and early 2017 involved drilling piles to provide firm ground on the pathway area at the top of the slope where the pathway collapsed. Watch a short video of this work.

Monitoring of the pathway is ongoing to ensure detection of any further erosion.

Pathway closure remains in effect

The City closed approximately one kilometre of the pathway for safety reasons in August 2016 and it will remain closed until restoration of the slope and reconstruction of the pathway can be completed. The pathway has been detoured along Mt. Alberta View and Mt. Douglas Close S.E.

Long-term solution

The City of Calgary is moving ahead with a long-term solution to protect the 3.5km section of the pathway, identified in the report presented to Committee and Council in late fall 2015. The next phase of work is construction of a retaining wall adjacent to the pathway of this section.

Slope stability projects are highly complex, and one solution will not fit for every section of the pathway. There may be a variety of solutions developed in order to meet the conditions in each section.

About the project

Slope movements on the escarpment east of the Bow River adjacent to the communities of Douglasdale and McKenzie Lake have caused damage to The City's pathway along a 3.5km section.

Since 2005, The City of Calgary has worked with external consultants to monitor, investigate and develop restoration options for The City's infrastructure (the slope and the pathway) in accordance with the Slope Stability Management Framework. In August 2015, a geotechnical consultant completed a feasibility study with initial recommendations and cost estimates for the long-term stabilization of the slope and reconstruction of the pathway. The City's responsibility is to stabilize the slope and the pathway to ensure the safety of pathway users.

In 2016 The City began working on the design and construction of a solution to improve the stability of the slope and the pathway that supports the slope. The project will take place in phases and over several years.

Heavy rain during the summer of 2016 caused erosion of the pathway in a section behind Mt. Alberta View. As a reuslt of an inspection process the pathway has been closed. The City will continue to monitor the slope and the pathway.

Project timeline

  • September 2016 - Restoration work begins on most urgent section of pathway instability
  • Late 2017 - Construction of long-term solution anticipated to begin
  • Mid-2019 - Anticipated completion of retaining wall adjacent to pathway

Communication

We will continue to provide updates about this project.

Please fill out the 311 online form if you require more information.​​​​​

Image gallery

Photo Gallery - Unclassified

​​​​