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Heritage Drive S.E. flood barrier

Project update - May 19, 2020

Construction is continuing on the three components of this project.

The remainder of the work relating to the construction of the regional pathway, such as paving, installation of guard rails and fencing, will be completed by the summer of 2020.

Most of the bioengineering has been completed, however, some minor work will take place in 2020.

Impacts

The project team is committed to minimizing any access impact to the area, and will regularly update the project website.

Demonstration of flood barrier gate installation near Heritage Drive

Project details

This project ensures that Heritage Drive remains passable during Bow River flood events up to the 100-year flood. This will reduce disruption to traffic and maintain access for emergency responders. The project also provides the last segment of a regional pathway on the west bank of the Bow River extending from downtown to south city limits.

About the project

The three components to this project include:

  • Construction of a flood barrier on the east side of the Heritage Drive / 13 Street S.E. ramp to Glenmore Trail to the 100 year flood level. It will consist of a sheetpile wall structure with a decorative façade in the form of gabion rock cladding.
  • Construction of a regional pathway from the existing parking lot beneath Graves Bridge to the end of the proposed multi-use pathway that is to be constructed as part of the upgrade to the Bonnybrook Waste Water Treatment Plant. The pathway will also function as a 1:10 year flood barrier.
  • Bioengineering along 520 metres of riverbank (west side of Bow River) to stabilize against further erosion and loss of land and maintain the regional pathway.

Project background

Heritage Drive S.E. beneath Graves Bridge provides access between Deerfoot Trail and Glenmore Trail. It is inundated during flood events exceeding the 8-year return period flood event. During the 2013 flood, in addition to causing detours, the roadway was severely damaged by floodwaters and was impassable. A sheetpile flood barrier design (including two stoplog gates for local access roads) has been developed to protect this segment of Heritage Drive.

For the nearby riverbank from Bonnybrook Waste Water Treatment Plant (WWTP) to Graves Bridge, stability work is required to restore and preserve City lands adjacent to the river that was impacted by the 2013 flood. A pathway has also been proposed for this same riverbank area, to complete the regional pathway network between Inglewood and southern city limits (together with the proposed Bonnybrook WWTP pathway upgrades).

Once completed, this project will ensure that Heritage Drive S.E. remains passable during Bow River flood events up to the 100-year flood. This will reduce disruption to traffic and maintain access for emergency responders. The project will also provide the last segment of a regional pathway on the west bank of the Bow River extending from downtown to south city limits.

This project is an example of collaboration between three City business units (Calgary Parks, Utilities & Environmental Protection, and Transportation Infrastructure) to provide flood protection for city roadways and bank stabilization that includes restoration of riparian vegetation and aquatic improvements to improve the overall health of this portion of the Bow River.

Project timeline

  • Construction begins - Spring 2019
  • Project completion - Summer 2020

Budget

$10.5 million

This project utilizes provincial funding through the Province’s Alberta Community Resilience Program (ACRP) and the Flood Recovery Erosion Control (FREC).


Communications

The project team has worked with local businesses and landowners to provide information about the project.

Please fill out the online eServices form if you have questions or would like more information.

eServices - Major Road Construction Project


Related documents & links

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