Kruunusillat (Crown Bridges)

‘Gemma Regalis’, is a symmetrical cable-stayed bridge featuring a distinctive central 135m-tall pylon in the shape of a tall slender diamond, a reference to the historic crown ownership of the bay area, and whose multi-faceted surfaces have been designed to catch light and shadow by day and night. Equally recognisable in silhouette, the unique pylon forms a dynamic relationship with the two other tall landmarks in the capital city, the distinctive dome of Helsinki Cathedral and the tower of the Hanasaari power station, and supports two 250m spans which offer wide clear views of the low-lying coastal landscape at water level. A logical and proven structural form, the design minimises the cost and environmental impact of multiple supports in the water and the support piers to the approach spans adopt a ‘V’ shape, to complement the pylon and minimise their visual impact.