this was deemed by firefighters to have greatly aided in keeping the fire under control. The smoke extraction system functioned as planned and removed toxic fumes from the tunnel and out into the open air. Smoke was vented to the ventilation stack in Southbank. Metropolitan Ambulance Service Paramedics were sent in to treat evacuees if required. St John Ambulance Australia emergency medical teams were also put on standby in case the accident was deemed as a major disaster and many more injured and fatalities had arisen. The driver of the speeding truck was found guilty of dangerous driving and was sentenced to five years in jail. Design The Burnley Tunnel is long and comprises of cut and cover at the west portal, of driven tunnel, and of cut and cover at the east portal. The gradient at the west end is 6.2% downhill for traffic, then relatively level until a 5.2% grade out of the tunnel. During construction a shaft located at the midpoint of the tunnel was used to speed up work, as it provided another two working faces for the roadheaders used. The shaft is today used for ventilation and emergency egress, in addition to a pedestrian tunnel that parallels the eastern part of the tunnel. Eight cross passages link the main and emergency tunnels, two more cross connects provide an emergency exit to the Domain Tunnel, and two emergency refuges are also located in the tunnel. Unlike the shallower and shorter Domain Tunnel, it passes deep under the Yarra River. It was subject to significant engineering problems and delays during construction due to unexpectedly high water pressures at its maximum depth of . A variable speed limit applies to traffic in the tunnel. In normal circumstances the speed limit is , but a speed limit applies during maintenance. The speed limit during peak periods is often reduced to to prevent unnecessary congestion at the Monash Freeway. Regular AM and FM radio transmissions can be received while in the tunnel because the tunnel operator has installed re-broadcast transmitters. Normal radio broadcasts can be interrupted by management announcements over all channels. See also Domain Tunnel, the westbound tunnel running parallel to the Burnley Tunnel. References External links news.com.au images Tunnels in Victoria (Australia) Toll tunnels in Australia Toll roads in Australia Crossings of the Yarra River Tunnels completed in 2000 2000 establishments in Australia Buildings and structures in the