Coquitlam Partial Cable Replacement

The project is located along an existing right-of-way that runs between Lougheed Highway and Spuraway Avenue in the Ranch Park neighbourhood of Coquitlam.
 

Coquitlam underground cable replacement project map

Select the project map [JPG, 320 KB] to view it at a larger size.
 

We're planning to replace 1.3 kilometres of an existing underground oil-filled cable between Spuraway Avenue / Pinnacle Street and the Como Lake Substation at Como Lake Avenue/Lougheed Highway in Coquitlam.

The existing cable section will be replaced with a new underground oil-free insulated cable. At road intersections, we'll build underground reinforced concrete containers, called 'duct banks', to house the cables.

This section of underground, oil-filled cable that we're replacing is old and leaks have occurred at the cable's joints due to high pressure from the elevation change between the top of the slope at Spuraway Avenue/Pinnacle Street and Como Lake Substation (at Como Lake Avenue/Lougheed Highway) – an elevation change of 170 metres.

We've successfully located and cleaned up past leaks; however, due to the age and accumulated fatigue at this location, we anticipate that more leaks will occur, requiring more costly repairs.

Replacing this section of cable with a new, oil-free insulated cable will extend the life of the cable and ensure it can run efficiently for many more years.

An environmental overview assessment has been completed to identify environmental features overlapping or directly adjacent to the cable alignment. This information has informed the design of the project and the required mitigation and monitoring plan for construction.