The North Shore Mountain Bike Association has posted a blog post that says this trail is planned to be decommissioned by Metro Vancouver Water District staff.

https://nsmba.ca/trail-decommissioning-and-sabotage/

The trail access tags already reflect the closure status.

The trail has not been confirmed to have been completely decommissioned and should not be deleted as a result. Once sufficient decommissioning is confirmed the prefix "demolished" or "removed" should be added to the highway path tag.