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Heritage Drive S.E. flood barrier

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. In addition to causing detours, during the 2013 flood, 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).

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. The flood barrier 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 Bonnybrook WWTP upgrade project.  The pathway will also function as a flood barrier to provide flood protection to local businesses east of Deerfoot Trail S.E. adjacent to the riverbank.
  • 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 benefits

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.

Design

This map shows the various components related to the project.

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).

Impacts

There may be periodic single lane closures on Heritage Drive to facilitate construction activities.

Throughout construction, access to the river parking area will be maintained via one of the two existing access points. The easternmost smaller access off Heritage Drive underneath Graves Bridge will be permanently closed as part of this project, however, the larger westernmost access off Heritage Drive will remain unchanged.

The project team is committed to minimize any access impact to the area, and will update the project website with detour info once construction starts.

Communications

Over the past two years, the project team has worked with local businesses and landowners to provide information on project design and to receive feedback.

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

eServices - Major Road Construction Project​​

Project timeline

Construction begins – Spring 2019
Anticipated completion – Late 2019


​​2013 flooding
2013 Calgary flood waters

Related links

Video of the 2013 flood

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