The first phase of the Glenmore Dam Infrastructure Improvements Program is the Utilities Relocation Project. This project will move the water and gas utility lines currently running across the top of the dam to a tunnel underneath the Elbow River. This is needed to allow access to the Dam for the remaining infrastructure improvement projects. Construction is expected to begin in May, and will continue through to Spring 2017.
August 12, 2016
- Excavation of the shafts is now complete, over 4,500 cubic metres of soil has been removed - that's enough to fill up over 600 dumptrucks!
- The tunneling equipment that will be used to dig the tunnel for the relocated utility lines, including underneath the Elbow River, has been launched into the shafts.
- Tunneling is in the early stages and is expected to continue until later this year before tie in of the new utility lines takes place.
- See the latest images on this page to see the tunneling equipment being launched.
May 17, 2016
- The contractor, Ward and Burke, has begun to mobilize equipment on-site at both the north and south shaft locations.
- Fencing has been put in place around three work areas (see images of work areas).
- There will be a pathway detour in place from May 24th until the work is complete in spring 2017 (see images of pathway detours for alternate routes.)
- In the coming weeks excavation will begin at the south and north shafts.
- During excavation trucks will be in the area to haul away material, and there will be noise from the excavation work.
- As some trees must be removed at the north end of this project, a bird sweep was done to identify any birds nesting in the area. None were found – the trees will be removed shortly. All trees removed will be replaced once the project work is complete.
The utility relocation will use trenchless tunnelling technology to excavate underneath the Elbow River. Before tunneling can begin, shafts must be excavated on either side of the river. Construction impacts for this project 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
What is trenchless tunneling?
Micro-tunneling is used to dig a shaft underground using special equipment, rather than digging an open trench. To get the tunneling equipment in place to dig the tunnel, two shafts must be excavated to launch the equipment and then retrieve it. Trenchless tunneling is far less invasive to the area at a comparable cost. Here are some benefits of using trenchless tunneling over traditional trenched construction:
- Tunneling work is kept underground (no visual impact)
- Limited amount of dust, only at launch and retrieval shafts
- Low to no impact to the river
- Removal of material is limited to the shafts and tunnel, rather than a full open trench
Please continue to visit this webpage to keep up to date on project progress as we work on this piece of critical infrastructure. If you have questions or concerns please call 311 (24 hours a day, seven days a week).