The Forest Pracrices Board board investigated 1,100 road crossings in 19 watersheds and
found that only 42 per cent were designed and built in a way that allow
fish to pass through. Even in streams considered "important or
critical" fish habitat, more than one in four road crossings blocked
fish movement.

In the Campbell-Memekay watershed north of
Campbell River, the board found that almost one-third of road crossings
of important or critical streams blocked fish migration.

LINK (Via: The Times Colonist)