Project Description

An arched unreinforced masonry footbridge composed of 3D-printed concrete blocks assembled without mortar. Exhibited during the 2021 Venice Architecture Biennale, the 16x12m footbridge combines traditional techniques of master builders with advanced computational design, engineering and robotic manufacturing technologies. Striatus optimises the interrelated properties of masonry structures and 3D concrete printing presenting an alternative to traditional concrete construction.

Judge’s comments

A showcase of what may be possible with developing technologies, this footbridge cleverly uses non-orthogonal 3D concrete printing to align the print layers with the stress directions.

The form of the bridge and the assembly responds precisely to the technology allowing lightweight printed components to be assembled dry and stabilised by their own form and weight.

While small-scale, the analysis covers many of the issued that larger and permanent structures face and hints at exciting development to come in the built environment.

Project overview

Structural Designer

  • Block Research Group at ETH Zurich

Client Name

  • European Cultural Centre / Holcim


  • Venice, Italy


  • Zaha Hadid Architects / ZHACODE / Block Research Group

Principal Contractor

  • Bürgin Creations

Key Contractors

  • incremental3D – 3D Concrete Printing

    Holcim – Concrete Material Development and Logistics

    LafargeHolcim Spain – Concrete Material Development and Logistics

    Ackermann GmbH – CNC Timber Formwork

    L2F Architettura – Site Measurements

    Pletscher Metallbau – Steel Supports

    ZB Laser – Lasercutting Neoprene

Year Submitted

  • 2022

Key attributes

  • Profession

    Photography credits: naaro