The tunneling work under the Hooghly river, the first such underwater project in the country, to provide metro connectivity between Howrah and Kolkata has almost finished. The underwater tunnel is a very important link for the railways’ 16.6-km long East-West Metro project in Kolkata. The 520-metre twin tunnel, one east-bound and the other west-bound, is built 30 metre below the riverbed. Passengers between Howrah and Mahakaran metro stations will enjoy travelling under the river for only about a minute when the metro train will pass through the tunnel at a speed of 80 km per hour. Of the 16.6-km route of the East-West Metro project, the tunneling covers 10.6 km, of which 520 metre is under the river.

देश की पहली अंडर वाटर मेट्रो टनल अगले हफ्ते पश्चिम बंगाल में तैयार हो जाएगी। 16 किमी के रूट वाली ट्वीन टनल ईस्ट और वेस्ट का मेट्रो प्रोजेक्ट कोलकाता का हिस्सा है। 520 मीटर का हिस्सा नदीं के नीचे का है। जिसे एक मिनट में 8-किलोमीटर प्रति घंटे के तेजी से पूरा करेगी।