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Douglasdale and McKenzie Lake Slope Stability and Pathway Project

Project update - November 4, 2019

Work continues on the 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.

Phase 1 - Pathway behind Mt. Albert View S.E.

Construction and related works for the restoration of the slope and pathway is substantially complete and the pathway is open. This area near Mt. Alberta View was the most urgent section and includes a retaining wall adjacent to the pathway.

The City has opened approximately one kilometre section of pathway that was closed during construction.

Phase 2 - Pathway North of 130 Avenue S.E.

Construction on the next area of priority for pathway and slope remediation north of 130 Avenue, behind a section along Douglasdale Point S.E. is underway with final completion anticipated for spring 2020. Work includes grading of slope, installation of piles, and pathway and habitat restoration. Piling in this area begins early in November. During the pile construction, there will be an increase in equipment and trucks accessing the construction site.

A section of the City pathway in this area has been closed for safety reasons to accommodate construction (see map​). The pathway will be reopened once reconstruction of the pathway is finished.

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

Habitat Restoration

As part of the project’s Habitat Restoration Plan, native tree planting is scheduled to take place in the natural park near Douglasbank Crescent from November 5 to 26, 2019. Area residents should anticipate intermittent disruptions to the pathway and parking lot during this time.

Project timeline

  • September 2016:
    Restoration work begins on most urgent section of pathway instability
  • Late 2017:
    Construction of long-term solution begins on Phase 1
  • Spring 2019:
    Phase 2 construction anticipated to begin
  • Fall 2019:
    Anticipated completion of Phase 1
  • Spring 2020:
    ​Anticipated final completion of Phase 2

Communication

We will continue to provide updates about this project.

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

 

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. 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. 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 result of an inspection process the pathway has been closed. See more about the pathway closure. The City will continue to monitor the slope and the pathway.

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.

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