Reconstruction of flood protection dikes for the Motława River in Gdańsk

Design and construction of flood protection dikes for the Motława River in Gdańsk, from river km 4+850 to 7+510: Reconstruction of the left and right flood protection dikes over a length of approx. 2,541 m on the right bank and approx. 2,702 m on the left bank, totaling approx. 5,243 m of dikes, on an area of approx. 8.585 ha. The technical parameters of the dikes will be adapted to hydrotechnical structure class II. The contract includes the preparation of multi-branch design documentation and obtaining all necessary permits. Construction works comprise preparatory works, demolition works, earthworks, drainage, ground reinforcement, construction of 3 temporary working cofferdams, erection of a reinforced concrete water intake structure with 600 x 600 mm gate valves, reinforcement of the dike crest and access roads with prefabricated multi-hole reinforced concrete slabs, scarp reinforcements, protection against beaver activity, and vertical reinforcement at the Radunia River mouth using steel sheet piles of approx. 7.75 m length with a reinforced concrete capping beam. Duration up to 29 months from contract signing, with Phase I (design) up to 20 months (Stage I up to 10.5 months, Stage II up to 16.5 months, Stage III up to 20 months) and Phase II (construction) up to 29 months.

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