The on-time and on-budget $2.1B project, jointly funded by the Australian and NSW Governments will give motorists an intersection-free, 100 kilometre an hour run directly to the new airport which will open later this year, taking an anticipated 25,000 vehicles per day off local roads.
The final component of the M12 is the M7/M12 Interchange at Cecil Hills which is on track to also open ahead of the new airport.
The M7/M12 Interchange will provide a motorway to motorway connection between the M12 and M7.
Secretary from Transport for NSW Josh Murray was present to ensure the opening of the new motorway went smoothly.
Transport for NSW secretary, Josh Murray said: “What is delivered is a brand new road we can all be proud of, and just part of the transport network that surrounds Western Sydney International Airport.
"The new airport will link Western Sydney to the world. Transport for NSW is linking Western Sydney Airport to the rest of Sydney and the state.”
