3 bridges between historic Omring Dyke and Oever Dyke in use, Hoorn (NL)

The bridges are cast in in-situ concrete with a shell-shaped form that ensures stiffness and structural efficiency. This typology creates a recognisable family of bridges with adaptable dimensions. Several challenges were overcome with innovative solutions, including ‘Federlamelle’ bearings, self-compacting concrete, and an integrated drainage-retention layer. The robust concrete walls require no maintenance and feature a coarse wooden texture that helps the bridge blend into the landscape. Inside the shell, a boardwalk, native vegetation, and rustic fencing complete the setting, anchoring the bridges gently into the landscape.