CHANGED TRAFFIC CONDITIONS 8:38 pm – NorthConnex Tunnel Beecroft to Wahroonga at . Northbound Tunnel closed. Closed for maintenance 9:30pm Wednesday 11 May to 5:00am Thursday 12 May. Diversions:Motorists can use Pennant Hills Rd which is suitable for all vehicles. Use an alternative route. Allow extra travel time; Plan your journey. Motorway Crew, are attending. Last checked at 8:41pm.