There is nothing simple about building roads and railways – especially when those builds are enormous modifications of existing and vital Sydney infrastructure.

Today’s report by Transport and Infrastructure editor Matt O’Sullivan on the Warringah Freeway upgrade is a classic example of no pain, no gain. The pain has not been unsubstantial, but the finish line is coming into view: one more year, authorities say.

The northern end of the Warringah Freeway.Credit: Janie Barrett

The upgrade ultimately will allow motorists to bypass the CBD when the Western Harbour Tunnel opens in late 2028. The 6.5-kilometre project will link the WestConnex motorway under the inner west to the Warringah Freeway in the north.

Since 2022, the Herald has been reporting on disruptions caused to home owners and cyclists as well as motorists trying to figure out their path to the other side of the bridge. Above the tunnelling,

© The Sydney Morning Herald