Mumbai's first Underground Railway Line 3 witnessed a twin tunnel breakthrough, of the third and fourth TBM of Colaba-Bandra-SEEPZ Metro-3 corridor at Dadar Metro Station. 18 km of tunneling and 35% work has been complete till now. The 33.5-km long Metro-3 corridor is finally ready! It's only a matter of time before the metro work is complete and open to the public.