Hot and dry conditions are closing the top half of Knox Mountain Drive.
The upper level will be closed to vehicles starting Saturday, with the city citing the high fire risk.
Traffic won't be allowed past the first lookout indefinitely, until municipal crews believe it's safe to reopen the road.
The upper levels of the park will still be open, but only to people hiking or biking up.
Staff are also reminding people that campfires and BBQs aren't allowed in any City or Regional District parks - the only exception is barbecuing on the beach.