Marine Drive Tunnel

The Marine Drive Tunnel is a road tunnel, currently under construction, which will connect Marine Drive in Kollupitiya to the Colombo International Financial City (CIFC). The Cabinet of Sri Lanka has approved the signing of the MOU in January 2018.

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Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

Other tunnels in Sri Lanka

Delaware Aqueduct United States · 137 km Päijänne Water Tunnel Finland · 120 km Orange–Fish River Tunnel South Africa · 82.8 km Ishikawa Tunnel Japan · 78.5 km Brenner Base Tunnel Austria · 64 km Mont d'Ambin base tunnel France · 57.5 km Gotthard Base Tunnel Switzerland · 57.09 km Hong Kong–Zhuhai–Macau Bridge China · 55 km