Project components
The Project includes a combination of temporary construction components, permanent infrastructure components and decommissioning/removal of existing infrastructure activities.
Temporary Project Components
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/temp-pjt-components-scaled-e1699487388787-1024x508.jpg)
Click image to enlarge
Permanent Project Components
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/perm-pjt-components-scaled-e1699487361549-1024x524.jpg)
Anticipated construction activities will include:
- Dredging to prepare the river
- Constructing temporary roads and bridges to access the laydown areas
- Excavating to build the casting basin and approaches
- Pile driving and installing stone columns to stabilize the ground and river bed
Preparing for a Complex Project
A number of programs were completed to advance Project design, understand the area the Project would be constructed in, and identify ways to manage impacts from the construction.
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/graphics_dredge.jpg)
Test dredge: We dredged a small section of the Fraser River to confirm sediment and water flow, density of the salt wedge, and the stability of the tunnel foundation.
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/graphics_soil.jpg)
Geothermal investigation: We studied upland and in-river geology to inform design, construction methodology and materials management.
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/graphics_marine-nav.jpg)
Marine navigation simulation: We organized a virtual simulation to ensure we can successfully manage river traffic and operations throughout construction, including safe use of detours during river closures.
![](https://engage.gov.bc.ca/app/uploads/sites/756/2023/11/graphics_survey.jpg)
Monthly hydrotechnical surveys: We have ongoing surveys to study river flows, including sediment build-up rates.