Auckland’s City Rail Link opens tomorrow, marking perhaps the most significant milestone on the city’s 30-year journey from almost losing suburban rail altogether in the early 1990s, to the modern, high-frequency, high-coverage, high-patronage network they have today. Let’s look at how they got here. In the 1980s, Auckland’s rail system was in a precarious position. Ageing rollingstock, a poorly-located main station on the periphery of the CBD, and a pervasive priority for motorway investment led to serious threats that the network would be closed altogether. The first such attempt was thwarted in 1983 by public backlash. Then in 1992, Perth’s network electrification gave Auckland an opportunity to acquire 19 secondhand diesel-powered AD-sets as a stopgap. Together with service reductions, this stopped the financial bleeding and bought time for Auckland to plan a true rail renaissance. Britomart (now Waitematā) Station was the crucial turning point. After the network’s rescue, Auckland Council started taking seriously the longstanding proposals to return rail’s terminus to the CBD – purchasing the recently closed Chief Post Office building in 1995. Construction began in 2001, with trains returning to Lower Queen Street in 2003 after a 73-year absence. It is one of the only underground stations in the world designed expressly for diesel trains, and a truly beautiful adaptive re-use of grand civic architecture. Subsequent upgrades added more capacity and new lines – duplicating the Western Line in 2009, reopening Onehunga in 2010, and the new Manukau Branch in 2012. Electric trains entered service from 2014, while ticketing integration with the bus and ferry networks made transfers seamless. But Britomart, the CBD hub, remained a terminal station – limiting train frequency and thus preventing full utilisation of what was by now a quite respectable network. The westward rail loop was always part of the masterplan – stub tunnels had been incorporated into Britomart, and by 2006 had been explicitly incorporated into the network’s longterm plan. Investment decision came in 2016, supported by the now well-established rising patronage trend. The design eventually settled on a 3.5km twin-tunnel design, with two new CBD stations – one in midtown, and one in the Karangahape Road nightclub district - vastly increasing the walkable catchment. So tomorrow’s opening is not just another rail upgrade. It’s a NZ$5.5 billion dollar completion of a 30-year project to turn Auckland’s rail system into something truly world class, andf future-proofing its network forever. Turning Waitematā into a through-station gives benefits disproportionate to its cost – not only unlocking turn-up-and-go frequency for the current network, but setting the stage for the next thirty years of upgrades.