_[aqua]duct

Aqueducts (or water bridges) are channels that historically lost significant amounts of water due to being constructed with porous materials. [AQUA]DUCT reverses that logic, and uses a porous material as an asset to soak up, cleanse and release water. The [AQUA]DUCT bridge uses U-shaped ductile concrete girders that filter water. The bridge becomes a protective lining for the Amstel canal, simultaneously soaking up canal and storm water through vertical pylons and horizontal tubes connected to embankments. The bridge becomes a productive surface that brings new aqua-life to the canal.

The horizontal girders allow for varying degrees of cavity space under the walk-able surface that either defines areas for water distribution or reed wetlands for cleaning canal water. The water is either soaked up from the vertical supports of the bridge or pulled in from the periphery and distributed among the pockets within the girders. Each web is perforated to allow water to slowly release back into the canal aerated and cleansed.

[AQUA]DUCT bridge is made with horizontal, structural U-shaped ductile concrete girders that twist in the longitudinal section. The structural integrity of the bridge gains its strength through the post-tensioned, bent beams that connect in the middle - one converse, the other convex. The material and structural systems allows it to span the 45 meters to the middle support with a low structural height of 1.2 meters. 

_AC-CA Bridge Competition, Amsterdam, Netherlands, 2012