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The Brixen-based MoDus Architects were given the opportunity to design a new gateway to the centre of Bressanone (Brixen), a small city in South Tyrol in Italy, as the latest addition to the Bressanone-Varna Ring Road. The project is an intriguing collaboration between landscape designers, engineers, geologists, underground experts, technological and structural engineers and architects.
First inaugurated in 2012, the five km-long ring road that bypasses the historic city centre of Bressanone to Varna was planned in an effort to avoid congestion, reduce pollution and to facilitate access from the north to the south. “Civil engineering projects provide a unique opportunity to bring together the different scales – and at times jarring specificities – of infrastructure, landscape, architecture and urban decorum. The Ring Road project underlines the reciprocity of these disciplines as a singular design challenge, not just given the environmental and economic impact of these projects, but also as a model for small cities grappling with questions of mobility, heritage and placemaking,” says architect Sandy Attia, co-founder of MoDus Architects.
The design brief mentioned a series of interventions and requirements - tunnel portals, retaining walls, acoustic barriers, service sub-stations, mechanical structures, ventilation chimneys, and various signage elements along its entire length. The project was guided by three simple design decisions - the architects sought to minimise the environmental impact, the elements above and below the ground were conceptualised into a unified approach, and the Bressanone and Varna tracts were pulled together into one continuum, as two parts of a greater whole.
“The project presents an inventory of complementary elements integral to the system of tunnels—as new entries, the central junction tunnel portals have been conceived as expressive figures whose raised heads emerge from the buried, unseen networks of roads serving as mediators of the disparate speeds and scales of the stratified urban context,” shares Matteo Scagnol, co-founder at MoDus Architects.The central juncture tract of the ring road is the section of the project where motorists navigate a roundabout and pass through a short U-shaped tunnel along with its two, respective exposed concrete portals. With the central juncture tunnel being the length of 500m, the entire ring road being five km and full length of the ring road being eight km, the designers created a sculptural mouth for the portal that steers away from the strictly technical or functional vocabulary otherwise offered by infrastructural projects.
“The role architects play in large infrastructural projects has been increasingly marginalised over the past few decades in Italy. The Ring Road in South Tyrol is borne of deliberate, decision-making processes that comprehend the importance of design at every scale and as such created the conditions necessary for a cross-disciplinary collaboration to occur,” adds Attia.
The concrete work of the new addition is made of aggregates and excavation materials drawn from the ongoing construction site of the 64km Brenner Base Tunnel traversing below the Alps from Innsbruck, Austria to Fortezza, Italy. Together with exposed concrete, larch wooden acoustic barrier walls and corten steel ventilation chimneys, the portals constitute important sites of architectural design that lie at the intersection of landscape, infrastructure and mobility.
MoDus Architects paid particular attention to noise emissions and many of the interventions, such as the Leca-beton walls, grappled with sound absorption solutions. Research into the reconfiguration of commonly used materials in the road-building industry unearthed solutions to better address environmental concerns while exploring new ways to combine simple, low-cost materials that could bridge the gap in scale and overcome the difficulties inherent to building in close proximity to the small-scale buildings of Bressanone.
The lyrical form of the corten steel chimneys, the curvilinear geometry of the exposed concrete entry portals, wooden acoustic barrier walls and with close attention to reducing environmental impacts, the design of these portals with exquisite partnerships showcase the power of collaborations and the difference architecture and design can make at every scale.
Name: Central Juncture of Bressanone-Varna Ring Road
Location: Bressanone (Bolzano, Italy)
Architect: MoDus Architects (Sandy Attia, Matteo Scagnol)
Client: Department of Infrastructure and Mobility of the Autonomous Province of Bolzano
Design phase: 2015—2017
Construction phase: 2017—2020
Completion: June 2020
Civil and Structural engineering, Construction management: Mario Valdemarin
Engineering team: Mario Valdemarin, Dieter Schölzhorn, EUT Energie und Umwelttechnik GmbH, Bergmeister GmbH, Geoconsulting Int.
Underground and geotechnical consultant: Mario Valdemarin, Dieter Schölzhorn
Geological consultant: Alfred Psenner, Icilio Starni
Technological systems consultant: Studio Tema Srl (p.i. Mattia Betti)
Project manager: Provincia Autonoma di Bolzano, dott. ing. Umberto Simone
General Contractor: PAC S.p. A in ATI with Wipptaler Bau and Beton Eisack
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make your fridays matter
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