Passerelle du Bassin de Commerce - Cherbourg - Webflow Ecommerce Website Template

Passerelle Michel-Legrand / infrastructure _ pedestrian and bike sliding bridge

[Summary]

Thirty centimetres above water / a bridge choreographing perception, rhythm and crossing.

[Team]

Dietmar Feichtinger Architectes

[Temporal Arc]

Immediate (proprioceptive novelty + Blue Mind immersion) · Chronic (urban reconnection across years of daily use)

[Direction of Effect]

RESTORE (Blue Mind immersion) · ORIENT (proprioceptive novelty) · ENCODE (city reconnected)

[Neural Tags]

W1 = Water proximity - Blue Mind · W2 = Immersive water contact · W3 = Urban waterfront at scale · S1 = Social contact activation

[Biological System]

Proprioception · Molecular signalling (serotonin, dopamine, oxytocin) · Autonomic regulation

[Description]

BRIDGE AS URBAN STRATEGY Situated in Cherbourg, Normandie. Its neighbouring cities Le Havre and Caen had different approaches regarding their development after WWII. One has been fully re-designed, the other has been re-constructed as it used to be. Both in their own means, once again became attractive for living and for tourism. On the other side, Cherbourg has started right now to develop a certain number of urban projects in order to rehabilitate the city. Pedestrian zones and a bridge are part of the agenda. Our main aim, beyond the functional connection from the old city and the new developing area of the city, was the urban treatment, the closeness to water and the feeling of appropriation of the city. The interface, created between the bridge, docks, roads and the surrounding, is a smooth one, also promoting circulation. The prolongation of the bridge towards both parts of the city are plazas allowing the inhabitants to stay and rest. The retraction of the bridge itself is seen as an event as the users can observe it closely. There is only a distance of 30 cm between the bridge and the water when it rises, so one feels as WALKING ON WATER. When the bridge closes, there is a space of water between the two fixed parts of the bridge. The V is the main beam, and also separates bikes from pedestrians, assuring comfort and safety. The engine, which drives the system of the movable part can be compared to the mechanics of the bicycle. The lighting and handrails are one and the same structure, becoming part of the new concept of the urban light of Cherbourg.The Passerelle Michel-Legrand is the 1st place winner of a restricted competition for a pedestrian and cycling bridge over the Bassin de Commerce in Cherbourg, designed by Dietmar Feichtinger Architectes. The 130-metre bridge connects the historic city centre to the new development areas on the opposite quay, healing a post-war urban fracture. One of five structural sections is retractable - retracting on demand to allow fishing boats through. The deck sits 30 centimetres above the water surface. Engineering: Terrell SAS. Structure: Normétal / Efinor. Lighting: Ateliers AIK / Yann Kersalé. Client: Ports Normands Associés. Budget: 3.3M€. Opened: October 2016. Named after the composer Michel Legrand. BfNA reading: this project is understood as a case study in movement, orientation, accessibility, safety, social mixing and collective behaviour. It extends beyond architectural production into environmental intelligence / how design decisions can support human adaptation, social responsibility, ecological performance and future evidence-based practice.

[Key Figures]

Typology: infrastructure _ pedestrian and bike sliding bridge · 2012-2016 · Length: 134 m · Mobile retractable section: 24 m · Weight: 130 tonnes · 5 structural sections · Material: steel + glass · Budget: 3.3M€ · Competition winner 2012 · Opened: October 2016

[Neural Analysis]

SENSORIMOTOR INFRASTRUCTURE: A moving bridge is read through anticipation, balance and trust: users perceive mechanical transformation through the body before understanding it intellectually.

BLUE MIND - WALKING ON WATER [W1][W2][W3]: 30 cm above the water surface = maximum Blue Mind immersion without being in water. Nichols (2014): proximity to water ↑ dopamine, serotonin, oxytocin; ↓ cortisol, heart rate [W1]. fMRI: water views reduce prefrontal cortex (anxious overthinking), activate pleasure regions [W3]. PROPRIOCEPTION & MEMORY: The sensation of 'walking on water' creates an unusual proprioceptive experience - high memorability through positive emotional activation (Surprise + Pleasure → dopamine spike → long-term memory encoding; Ranganath & Rainer, 2003, Nat. Rev. Neurosci.). URBAN APPROPRIATION [S1]: Pedestrian plazas at both ends activate social gathering; MacKerron & Mourato (2013): being outdoors near water with others generates peak positive-affect scores [S1]. WATER IMMERSION & NEUROCHEMISTRY [W1][W2]: At 30 cm above the water surface, the bridge provides maximum Blue Mind immersion. Nichols (2014): even brief proximity to water elevates serotonin, dopamine and oxytocin while reducing cortisol and heart rate. The oscillation of the retractable bridge adds proprioceptive novelty - Schultz (1997, J. Neurophysiol.): unexpected positive experiences spike dopaminergic arousal, deepening the positive memory of the crossing. BfNA neural-sciences lens: the relevant question is not only how the project looks, but how it conditions movement, orientation, accessibility, safety, social mixing and collective behaviour over time, across different bodies, neurotypes and social realities.

[Social Impact]

SOCIAL: The bridge reconnects urban edges for pedestrians and cyclists while making mobility memorable.

[ROI Sustainability]

ROI: Landmark infrastructure increases accessibility, public identity and low-carbon mobility value.

ROI: 1st place restricted competition → direct build contract. Bridge catalyses real estate value on both banks (15-20% uplift). SUSTAINABILITY: Steel + glass: 100-year lifespan; retractable mechanism allows port shipping access; LED urban lighting. 1ST PLACE RESTRICTED COMPETITION: Direct build contract confirmed. Bridge catalyses real estate appreciation on both banks: 15-20% uplift within 500 m (Normandie regional planning data, 2019). Steel + glass: minimum 100-year design life. ESG / investment lens: the value of this project is not limited to carbon or certification. It includes public value, climate adaptation, inclusion and civic resilience, producing evidence that can inform investors, public actors, operators and future environmental standards.

[Applied R&D Lens]

Study user hesitation, speed, gaze and comfort during opening/closing sequences and crossing.

The bridge provides the most controlled Blue Mind measurement condition in this portfolio: a defined spatial sequence from street level, across 30 cm of water surface, to the opposite bank - with a precise oscillation event (the mobile section) embedded within it. BfNA's Applied R&D would deploy wearable cortisol and heart rate variability measurement across regular bridge users - tracking the autonomic nervous system's response to the water proximity sequence, the proprioceptive novelty of the bridge's movement, and Yann Kersalé's lighting at night. The commuter context allows longitudinal measurement: the same people, the same bridge, measured continuously across seasons. What does water do to the body, daily, for years?Future data layer: deployed through BfNA, the project could become a longitudinal dataset linking environmental conditions, behavioural patterns, social outcomes and ecological performance / transforming built space into knowledge for future design.

Citations:

Sources: Nichols (2014) Blue Mind · Oppezzo & Schwartz (2014) J. Exp. Psychol. · Schultz (1997) J. Neurophysiol. dopamine novelty · Normandie regional planning data (2019). · Embodied cognition; bridge/public-space research; Dietmar Feichtinger project sources.

Project Credits: Dietmar Feichtinger Architectes; Team: Dietmar Feichtinger Architectes.Laura Role: Laura Ulloa - Project Leader / lead responsibility where documented in CV, office records or project archive.Image Credits: © Dietmar Feichtinger Architectes and/or respective photographers/visualisation studios.Source: https://feichtingerarchitects.com/les-projets/290_cherbourg_passerelle/ / https://www.world-architects.com/de/dietmar-feichtinger-architectes-montreuil/project/footbridge-on-the-commercial-docks.Project Credits & Copyright Notice: Every effort has been made to identify and acknowledge architects, consultants, collaborators, photographers, visualisation studios and other contributors associated with each project. Project descriptions have been rewritten and curated by Bureau for Neural Architecture (BfNA). Architectural works, photographs, renderings, drawings, trademarks and visual material remain the property of their respective authors, studios, photographers, visualisation teams and rights holders. Contributors are credited wherever information is available. Rights remain with their respective authors and rights holders.