HAZARD Earlier truck on fire 9:23 am – M1 Pacific Motorway Mooney Mooney just past Hawkesbury River Bridge Northbound traffic affected. The loop on-ramp from the Pacific Highway is closed. Motorists should use the Mount White on-ramp to join the M1 Pacific Motorway.  Reduce your speed Exercise caution Transport for NSW,Emergency services, are attending . Last checked at 1:40pm.