A multilevel structure (three traffic levels crossing in several locations), it has been described as a "fiendishly complicated, multi-layered puzzle of concrete, steel and asphalt".During the duration of this NZ$208m project, the existing motorways had to be closed several hundred times during overnight, with traffic rerouted over local roads.The NZ Transport Agency was in November 2009 investigating a plan to extend the off-road Northwestern Cycleway through the intersection, to join it to Symonds Street and achieve better cycle linkages from the west into the Auckland CBD.[5] In mid 2010, it became public that a preliminary alignment had been chosen, with the cycle path using the Upper Queen Street bridge to cross the motorway.[6] A disused offramp was repurposed in 2016 as a dedicated walking and cycling shared path, extending the Northwestern cycleway through to Nelson street.
Looking south on the northern end of the CMJ.
View over the northern section of the CMJ, showing ramps and links, from Hopetoun Street Bridge
View southwards from Hopetoun Bridge, showing the three-level structure under K'Road.