Northern Interchange Compound
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The Northern interchange will provide direct connection from the tunnel to the M1 Pacific Motorway for both north and southbound motorists. Motorists entering and exiting the main tunnel will access Pennant Hills Road and the Pacific Highway through the existing signalised intersection where the M1 Pacific Motorway meets Pennant Hills Road.
Motorists traveling along Pennant Hills Road will be able to access the tunnel southbound or the M1 Pacific Motorway by turning right at the Pennant Hills Road intersection with the M1 Pacific Motorway. Access to the tunnel from the Pacific Highway will be from Pennant Hills Road at Pearces Corner, left at the Pennant Hills Road / M1 Pacific Motorway connector and onto the southbound tunnel ramp.

Final breakthrough

The project celebrated its final breakthrough at the northern end on the 8th October 2018. Check out this video of roadheader Claire excavating the final centimetres of rock. 

Project timeline

Construction updates