CHANGED TRAFFIC CONDITIONS the deluge sprinkler system activated 4:34 pm – M1 Pacific Motorway Ewingsdale in St Helena Tunnel Southbound Tunnel closed. Diversions:Hinterland way to re-join the M1 Pacific Mwy at Bangalow Use an alternative route Exercise caution Transport for NSW,Emergency services,Motorway Crew, are attending . Moderate traffic conditions. Last checked at 4:44pm.