Mumbai Metro Rail Corporation has completed 96 per cent undergrounding of Package-1 of Metro-3 near historic heritage buildings. Surya-2 is a Robins-built dual-mode hard-rock tunnel boring machine.
The down line route from Hutatma Chowk to CSMT is 569 m. The underground phase was completed in 106 days with the help of a total of 418 rings. With this undergrounding, a total length of 2.9 km down line between Cuff Parade and CSMT in Package-1 has been completed.
Package-1 includes Cuff Parade, Vidhan Bhavan, Church Gate and Hutatma Chowk metro stations. So far, six undergrounding phases have been completed under this package. So far, 95% undergrounding has been completed for Metro-3 project.