يتوسع جسر الصلب النحيف مع صافي الجلوس المتكامل عبر ميناء فورتا في كرواتيا

The steel bridge over Foša in Trogir, Croatia, is an architectural masterpiece that blends modernity and heritage, connecting the historic city center a UNESCO World Heritage Site with Fortin Park across a sea channel. Designed by Prostorn Taktike, the bridge is not just a pedestrian pathway but also reflects urban sensitivity and adaptation to the surrounding marine environment.

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Asymmetrical Hyperbolic Design Preserves Heritage Views

The bridge features a non-symmetrical hyperbolic geometry, resulting in a slender steel structure with varying cross-sections. This design minimizes visual obstruction while preserving panoramic views of the city’s historic landmarks. The highest point of the bridge acts as a subtle threshold, maintaining the visual integrity of the old town without disrupting its historic skyline.

slender steel bridge with integrated net seating expands over foša port in croatia

Shipbuilding Heritage Inspires the Bridge’s Construction

The Prostorn Taktike team drew inspiration from Trogir’s shipbuilding legacy, with the internal caisson system made of flat steel plates echoing traditional shipbuilding techniques. The entire bridge was prefabricated in a local shipyard, transported by barge, and installed on pre-built supports in just one day. This approach minimized urban disruption while showcasing local industrial expertise.

slender steel bridge with integrated net seating expands over foša port in croatia

Durable Materials and Smart Finishes Enhance Aesthetics

Materials and finishes were carefully selected for durability and contextual harmony. The exterior is coated with a three-layer metallic powder system, allowing the surface to develop a patina resembling Corten steel’s rust-like appearance over time. This not only adds natural beauty but also ensures long-term protection against marine conditions.

slender steel bridge with integrated net seating expands over foša port in croatia

A Comfortable and Interactive Pedestrian Experience

The design prioritizes user experience, featuring:

  • Gentle stair slopes with anti-slip materials for safety.
  • A mix of stone and rubber flooring for stability and comfort.
  • Integrated seating areas along steeper sections, encouraging social interaction.
  • Perforated steel mesh panels that provide seating while reducing visual weight.
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Balancing Innovation and Sustainability

The project demonstrates environmental commitment through:
Locally sourced and recycled materials.
Off-site manufacturing to reduce carbon footprint.
Merging contemporary engineering with historic awareness, adding a new layer to Trogir’s urban landscape.


✦ ArchUp Editorial Insight

The Foša steel bridge exemplifies harmonizing modern architecture with cultural heritage, seamlessly integrating function and aesthetics. However, its social impact could have been amplified with interactive lighting or public art installations to foster community engagement. Nevertheless, the project remains an engineering triumph, particularly in how it weaves local craftsmanship with advanced technology, making it a valuable addition to Trogir’s urban fabric.

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