Tunnels

During a storm event, the First Street Tunnel will store up to 30.3 million liters of combined sewer overflow in its 853 meters of tunnel and 4 shafts, preventing flooding in Bloomingdale and Le Droit Park.

This Centralized Underground Transport Hub Opens Up Development of Social Venues and Green Spaces.

The Circle Line is Singapore's fourth mass rapid transit line and the longest fully automated metro line in the world.

The Norra Station/Over Decking project involves extending the Norra Länken to create Hagastaden, a new district uniting the cities of Stockholm and Solna.

First road tunnel construction across the Bosphorus linking Europe and Asia: innovation and international collaboration to solve technical challenges.

Delivering a sustainable and viable mass transit system to India’s Delhi residents, with the addition of new metro lines and stations

Two major bridges, 13 overpass bridges, 17 highway bridges, 11 interchanges, 90-meter-long tunnel, 14-lane toll plaza, and 42-km of new four-lane highway.