Tunnel Inspection, Rehabilitation, Operation

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.

Groundbreaking land development project, involving bridges, roads, marine structures, utilities, power, water, and tunnels

The tram network in Stockholm is undergoing a major expansion. Tramway City is expected to carry 63,000 passengers per day in 2030 and will supply the new Royal Seaport district with efficient and environmentally friendly public transport.

Stockholm Central Station is the busiest station in Sweden, both for long-distance travel and within the Stockholm commuter network.

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

Speeding up cross town travel and connecting urban areas with Helsinki’s International Airport 

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.

The first deep-water concrete immersed-tube tunnel in North America will significantly reduce travel time while greatly improving safety.

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.