The Three-Boat Bridge: A Vision of Floating Bridge Architecture as Urban Public Space

In contemporary cities, bridges are no longer perceived solely as infrastructural connectors. Increasingly, they are understood as civic spaces capable of hosting social interaction, urban life, and ecological awareness. The Three-Boat Bridge explores this expanded role through the lens of floating bridge architecture, proposing a structure that is simultaneously a transport link, a public landscape, and a spatial experience rooted in water.

Designed by Natália Čuntová, the project challenges the conventional notion of a bridge as a fixed, static object. Instead, it introduces a dynamic system composed of three self-propelled floating ships, transforming the act of crossing into an immersive journey through multiple spatial layers.

Floating Bridge Architecture and Urban Mobility

At its core, the project addresses sustainable urban mobility, particularly cycling, as a fundamental component of future cities. Even more than a century after the invention of the bicycle, cycling remains one of the most ecological, efficient, and health-oriented modes of transportation. By prioritizing bicycles and pedestrians, the bridge reinforces the idea that urban infrastructure should support low-impact mobility while enhancing the quality of public space.

The Three-Boat Bridge is conceived as a water-based connection that integrates seamlessly into the urban fabric of Copenhagen. Its floating nature allows it to respond to water levels and maritime traffic, ensuring functionality without imposing rigid constraints on the surrounding environment.

Concept and Spatial Organization

The architectural concept is defined by three distinct floating elements anchored together:

• Two outer boats act as stable platforms, connected to the shoreline while remaining afloat.
• A central boat rotates around a joint aligned with the direction of the channel flow, opening the bridge for passing vessels.

This kinetic system allows the bridge to function as both a connector and a gateway. When the central segment rotates, access is restricted to ensure safety, while movement continues along the outer platforms. This choreography between motion and pause transforms infrastructure into an event within the city.

Layered Public Space Above and Below Water

One of the most distinctive aspects of this floating bridge architecture is its vertical layering. Rather than concentrating all movement on a single deck, the design distributes activities across multiple levels:

• Above the water: Open public decks and landscaped surfaces encourage people to linger, observe, and gather.
• At water level: The primary communication deck facilitates bicycle and pedestrian flow.
• Below the water: Enclosed spaces allow users to experience the aquatic environment directly, blurring the boundary between architecture and water.

This spatial stratification creates environments with distinct atmospheres, from dynamic circulation zones to contemplative public spaces, reinforcing the bridge’s role as an urban destination rather than a mere passage.

Programmatic Integration and Everyday Use

Beyond circulation, the bridge incorporates everyday urban functions such as cafés, bistro spaces, bicycle services, storage, and staff facilities. These programs activate the structure throughout the day, ensuring constant engagement and transforming the bridge into a lively extension of the city.

By separating fast-moving bicycle traffic from slower public activities, the design resolves a common conflict in urban infrastructure. Cyclists can move efficiently along the main deck, while pedestrians occupy spaces above and below, fostering coexistence without compromise.

Sustainable Design and Ecological Awareness

Floating bridge architecture inherently responds to environmental conditions. By resting on the water surface, the bridge minimizes disruption to the riverbed and surrounding ecosystems. The reliance on cycling as the primary mode of movement further reduces emissions, noise, and urban congestion.

In this sense, the project demonstrates how thoughtful urban design can actively support sustainable transportation while cultivating healthier lifestyles and stronger connections between people and their environment.

A Landmark Shaped by Experience

Rather than relying on monumental scale alone, The Three-Boat Bridge becomes a landmark through experience. Its sculptural form, kinetic behavior, and layered spatial sequence invite repeated visits and diverse interpretations. Users encounter the city from new perspectives—looking outward from above, across the water at eye level, and inward from beneath the surface.

This experiential richness ensures that the bridge is not only visible within the cityscape but deeply embedded in the collective memory of its users.

The Three-Boat Bridge redefines the role of bridges in contemporary cities through an innovative approach to floating bridge architecture. By merging mobility, public space, and water-based experience, the project proposes a future where infrastructure becomes adaptable, inclusive, and deeply human-centered. It stands as a compelling model for how urban bridges can evolve into vibrant civic environments that connect not just places, but people, movement, and nature.