Europe’s Largest Cable-Stayed Bridge Takes Shape Near Wolgast: A Monumental Engineering Feat Underway

Wolgast, Germany – A colossal engineering project is rapidly transforming the landscape near Wolgast, Germany, as construction progresses on what is poised to become Europe’s largest cable-stayed bridge. This ambitious undertaking, spanning the Peenestrom waterway, is not merely a new crossing but a vital artery designed to significantly enhance connectivity to the popular island of Usedom and alleviate traffic congestion in the region. The sheer scale of the project, involving deep foundations, towering pylons, and intricate construction techniques, marks it as one of Germany’s most complex and significant infrastructure developments.

The new Peenebrücke, as it is locally known, is the cornerstone of a broader bypass project for Wolgast, a town that has long grappled with the bottlenecks created by its existing infrastructure. The existing bascule bridge, while picturesque, frequently disrupts road traffic for passing vessels, leading to considerable delays and frustration. The new structure aims to eliminate these disruptions, promising a seamless flow of traffic and a significant boost to tourism and local commerce.

A Project of Unprecedented Scale and Complexity

At the heart of this engineering marvel is a 1,465-meter-long bridge complex, with the main cable-stayed section boasting an impressive 252-meter central span. This elegant design, reaching skyward with 70-meter-high pylons, is engineered to support a 42-meter clearance above the Peenestrom, allowing even the largest maritime traffic to pass unimpeded. The ambition is clear: to create a landmark structure that is as functional as it is visually striking.

The construction, which officially commenced in late May 2026, has already seen significant progress. Early phases focused on essential groundwork, including the installation of sheet pile walls and the meticulous preparation of foundation sites. These initial steps, though often unseen by the public, are critical for establishing the robust base required for such a monumental structure.

Deep Foundations: Anchoring a Giant to the Earth

A defining characteristic of the Peenebrücke project is the extraordinary depth of its foundations. The bridge’s piers are anchored by drilled piles that plunge as deep as 58 meters into the ground, a testament to the challenging soil conditions encountered. On the mainland side alone, six to eight large-diameter drilled piles, each 1.50 meters wide, were installed at each of the four pier locations, reaching depths of up to 45 meters.

The most demanding foundation work is concentrated at the mainland pier situated within the harbor area. Here, a staggering 25 drilled piles have been sunk to a depth of approximately 58 meters, a remarkable feat of geotechnical engineering. This extensive deep foundation work underscores the critical importance of ensuring the long-term stability and safety of the bridge, especially given the variable nature of the subsoil.

The necessity for such extensive specialist deep foundation work was recognized early in the planning stages. The state road construction authority has identified the challenging ground conditions as one of the project’s primary hurdles. Prior to the official construction start, specialized dredging equipment was deployed to clear silt from the Peenestrom riverbed at the future pier sites. Implenia, the lead contractor, has cited the complex foundation operations using large-diameter drilled piles and the execution of work over water as significant technical challenges that demand meticulous planning and execution.

Unforeseen Obstacles and Steady Progress

While the project is largely progressing according to schedule, the underwater construction phase has not been entirely without its surprises. At the harbor edge, submerged structural elements had to be meticulously removed before the installation of sheet pile walls could commence. In another instance, construction crews unearthed remnants of a building that had been demolished in the 1990s, necessitating further excavation and site preparation.

Despite these unforeseen issues, authorities confirm that the overall progress of the construction remains on track. The project team is adept at navigating these challenges, ensuring that each obstacle is addressed efficiently without significantly impacting the overall timeline.

A Multifaceted Structure: More Than Just a Single Bridge

The commonly cited length of approximately 1.4 kilometers refers to the entire bridge complex, which is, in fact, composed of three distinct sections. The core cable-stayed bridge over the Peenestrom measures 502 meters. This central span is flanked by two approach viaducts.

The crossing begins on the Wolgast side with a 347-meter-long approach viaduct. This is followed by the 502-meter-long main bridge spanning the Peenestrom. On the opposite bank, a further 616-meter-long approach viaduct crosses the Sauziner Bucht.

These individual sections feature distinct structural designs. The two approach viaducts are constructed as single-cell steel composite box girders. The signature cable-stayed system, however, is exclusively employed for the main Peenestrom bridge. Here, the deck is designed as a steel composite trough with external main girders, a configuration optimized for spanning large distances.

The main span of the cable-stayed bridge stretches an impressive 252 meters between intermediate supports, a distance that allows for unobstructed passage of vessels without the need for additional piers within the waterway.

The Elegance of the Cable-Stayed Design: A European First

The cable-stayed bridge design employed here belongs to the family of "extradosed" bridges. While visually reminiscent of a traditional cable-stayed bridge, extradosed bridges feature lower pylons relative to their span and shallower cable angles. This design allows for greater load distribution and a more streamlined aesthetic.

In the case of the Wolgast bridge, the relatively rigid deck, external main girders, and the cable-stayed system work in synergy. The cables, routed over the pylons, provide crucial support to the deck. This integrated approach enables the achievement of large spans with lower pylon heights compared to many classic cable-stayed structures.

The pylons themselves will stand approximately 70 meters tall, a significant height that contributes to the bridge’s commanding presence. According to state officials, this dimension is set to make it the largest cable-stayed bridge of its kind in Europe. The construction consortium, Implenia, describes it more cautiously as one of the largest bridges of this type on the continent.

The Strategic Height: Ensuring Uninterrupted Maritime Flow

The 42-meter clearance between the water’s surface and the bridge deck is a deliberate and essential design feature. This ample vertical space ensures that even large vessels can navigate the Peenestrom without requiring the bridge to be lifted or opened. This is a significant improvement over the current situation, where the existing bascule bridge must be opened multiple times daily for maritime traffic, causing considerable disruption to road users on the B 111.

The new bridge will feature a 8-meter-wide, two-lane carriageway. This is part of a larger 6.8-kilometer-long bypass project designed to reroute traffic heading towards Usedom, thereby easing congestion in Wolgast.

The "Taktkeller": A Smart Approach to Deck Construction

While visible progress is being made on the bridge piers, a significant undertaking is underway on the mainland: the construction of a "Taktkeller," or construction hall. This specialized facility will play a crucial role in the bridge’s deck assembly.

The Taktkeller is designed to facilitate the incremental launching of a portion of the bridge deck. This "incremental launching" or "balanced cantilever" construction method allows large sections of the bridge deck to be fabricated on land and then systematically pushed into place over the piers. This technique offers a significant advantage for over-water construction, as it minimizes the need for complex and time-consuming assembly work directly above the water. The majority of the deck construction can be completed from a stable onshore working position.

While the specific sections to be assembled and launched from the Taktkeller have not been definitively detailed, the state road construction authority has indicated that a portion of the bridge deck will be advanced over the piers using this method.

A Project of National Significance and Substantial Investment

Financially, the Peenebrücke project represents one of Germany’s most extraordinary road construction endeavors. The contract sum for the bridge structure alone amounts to 421 million Euros. The entire Wolgast bypass project, including the bridge, is being funded by federal resources totaling approximately 500 million Euros. The state of Mecklenburg-Vorpommern has designated it as its largest current road construction project.

The contract for the bridge construction was awarded to a consortium led by Implenia Civil Engineering, with participation from DSD Brückenbau, Victor Buyck Steel Construction, and Stahl Technologie Niesky. The object and structural design planning were carried out by Leonhardt, Andrä und Partner, a renowned engineering firm.

The construction process integrates multiple specialized disciplines, including specialist deep foundation work with large-diameter drilled piles, operations within the Peenestrom waterway, steel and composite bridge construction, and the erection of complex piers and pylons.

Looking Ahead: A Vision of Enhanced Connectivity

While the towering pylons are still in their nascent stages of construction, the visible progress on the bridge’s substructure signals a tangible step towards the completion of this landmark project. According to the current timeline provided by the state, the entire bypass, including the new Peenebrücke, is slated for opening to traffic by the end of 2029. This monumental undertaking promises not only to redefine the skyline of Wolgast but also to usher in an era of improved connectivity and economic vitality for the region and the island of Usedom.