TBMs will launch from Clarinda later this year to dig the tunnels between Cheltenham and Glen Waverley, and from Burwood to dig the tunnels between Glen Waverley and Box Hill. Construction of the TBM launch site at Burwood is already complete.

Excavation has started at the eastern side of the Clarinda launch site, which will reach a final depth of about 19.5m. Crews are finalising ground preparation works to commence excavation of the western side soon.

Between February and March, nearly 1,000m3 of concrete was poured at Clarinda, with crews using a concrete mix designed to reduce carbon emissions.

SRL East will deliver 26km of twin tunnels and six new underground stations at Cheltenham, Clayton, Monash, Glen Waverley, Burwood and Box Hill. It will provide Monash and Deakin universities with direct train lines.

The line is due to be operational in 2035.,

The Suburban Connect consortium comprising CPB Contractors, Ghella, and Acciona is delivering the southern section between Cheltenham and Glen Waverley, while the Terra Verde consortium, comprising Webuild, GS Engineering and Construction, and Bouygues Construction Australia, is constructing the northern section of twin tunnels connecting Glen Waverley and Box Hill.