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Glenmore utilities relocation project

The first phase of the Glenmore Dam Infrastructure Improvements Program is the Utilities Relocation Project. This involves moving the water and gas utility lines currently running across the top of the dam to a tunnel underneath the Elbow River. Construction will be complete in June 2017.

Construction impacts

Before tunneling can begin, shafts must be excavated on either side of the river. Construction impacts will include:

  • Increased traffic to site (construction crews, trucks hauling materials to and from site)
  • Construction noise from excavation of shafts
  • Possible vibration as the shafts/tunnels are excavated
  • A section of the off-leash dog park will be closed to the public
  • The pedestrian pathway across the dam will remain open for the duration of this project.
  • There will be a pathway detour on the north side of the dam


May 30, 2017

  • All pipe work is now complete – a new water and gas line have been installed in a tunnel under the Elbow River.
  • The new water line is in service and is supplying drinking water to south Calgary. The new gas line will be tied into the existing utility by ATCO in June or July.
  • Backfilling of tunnels and shafts is complete.
  • The construction sites are in the process of being restored to their original condition.
  • Removal of the existing lines on the bridge deck will follow in Phase 2 of the project.

What is trenchless tunneling?

Micro-tunneling is used to dig underground - or in this case under the river - using special equipment. To get equipment in place to dig the tunnel, a shaft is excavated on either end. Trenchless tunneling is far less invasive than a traditional trench, and has several benefits:

  • Low to no impact to the river
  • Tunneling work is kept underground
  • Limited amount of dust, only at launch and retrieval shafts
  • Removal of material is limited to the shafts and tunnel, rather than a full open trench

Project information

Regular updates will be posted as work progresses. If​ you have questions or concerns please call 311.​