The development phase of the Crown Bridges alliance includes the development of the Crown Bridges tramway and other demanding infrastructure works in the area. The construction phase includes the construction of the entire tramway and and the 400-metre Merihaka Bridge.
Dredging and underwater excavation
Dredging is underwater earthworks intended to modify the depth of the sea, lake or other water body.
We carry out shoreline construction with different techniques: with slip form retaining wall elements as well as piled quay structures and underwater excavation.
In addition to small shore locations, dredging can also be used in large harbour areas and waterways. Dredging can be done from the shore, using floats on the water or on ice. Contaminated bottom sediments can be removed sustainably from the waterways using suction dredging or a closed bucket, preventing the spreading of contaminated soil back into the water bodies.
Areas of application for dredging
Dredging can be used to renovate shorelines and waterways, to build, deepen and maintain waterways, ports and marinas. Beaches and recreational areas can also benefit from dredging.
Choosing a dredging method suitable for the project guarantees that the dredging does not cause any harm to the environment. The dredging operation is usually conducted by means of bucket dredging. In dredging, attention should be paid to the piling up of dredged spoil. This must be done with the environment in mind and especially carefully if the sediment to be dredged is contaminated.
We have access to versatile equipment, allowing dredging in many kinds of conditions. All our units are fitted with GPS and a software allowing us to ensure the desired depth and accuracy of excavation. We use our special environmentally friendly scoop in the dredging of contaminated soil.
Underwater excavation
Underwater excavation is used to reduce the rock level height in a sea, lake or other water body.