M2 delays for commuters after truck fire The burnt out remains of a truck in the Epping tunnel. Photo: Fire and Rescue NSW The M2 resembles a car park after a truck fire closed all west-bound lanes of the Norfolk Tunnel at Epping about 1.30pm. All lanes were reopened about 4pm but commuters are expected to face "significant delays" during the peak hour period. Emergency services initially closed all lanes and were forced to turn city-bound motorists back. A truck fire has closed the M2 in both directions. Photo: Dominic Allen The Transport Management Centre said there was heavy traffic banking up and expected long delays for commuters. ""They can either sit in the queue or the other option is using Epping Road and Pennant Hills Road instead,"" a spokeswoman said. About 30 firefighters from six crews were called to help put out the fire in the engine of the truck. Fire and Rescue NSW's Ian Krimmer said the tunnel's sprinkler system was activated quickly and helped to contain the fire. ""Firefighters with hose lines went into the tunnel to extinguish the fire in the engine compartment,"" Superintendent Krimmer said. The charred truck has been removed by a heavy haulage tow truck but all lanes in the west bound tunnel remained closed. Firefighters and paramedics were called to the tunnel, which filled with smoke. The truck driver was treated for minor smoke inhalation, according to Fire and Rescue NSW. No one else was injured. The cause of the blaze is not yet known. Elsewhere, two northbound lands were closed on the Sydney Harbour Bridge just before 4pm due to a small fire near lane one, and the rail corridor. The lane was reopened about 4.10pm.