The work – which is the subject of an agreement between Region Lombardy, the Province of Milan, the Province of Bergamo and the Municipality of Cassano – replaces the current route crossing the very center of Cassano D’Adda with a new route south of town center, without junctions and fully out-of-town.
The new section of the former S.S. 11 is approx. 2650 m long, and its main works of art include three bridges:
1) the first one over channel Muzza, 54 m long, with a mixed steel/reinforced concrete structure;
2) the second one over the Adda river, 300 m long, divided into five spans, of which the two side spans have a length of 45 m each, and the three central spans of 70 m each;
3) the third one over the irrigation ditch Rivoltana, 98.80 m long, divided into four spans, of which the two side spans have a length of 24.40 m and the two central spans of 25 m, made of reinforced and pre-stressed concrete).
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The new route (secondary interurban road, type C) starts from the roundabout between Via Einstein and Via Leonardo da Vinci, and develops in the countryside as far as the railway station of Cassano where a new roundabout will be created providing access to the areas of the Italian Railway Network and to municipal roads; it then crosses the current car park of the railway station – after which there will follow the bridges over the Muzza, the Adda and the Rivoltana irrigation ditch, alternated with embankments and relevant bank protections – and it finally joins the S.P. 4c with a third roundabout on the left bank of the Adda. The most significant work is the new bridge over the Adda river: not only a structural design to cross the river bed, but also an interesting example of multidisciplinary application that, while fully respecting the sensitive landscape and watercourse system of the relevant area, successfully combines the use of structurally state-of-art solutions with maximum reduction of the implementation costs.
The most significant work is the new bridge over the Adda river: not only a structural design to cross the river bed, but also an interesting example of multidisciplinary application that, while fully respecting the sensitive landscape and watercourse system of the relevant area, successfully combines the use of structurally state-of-art solutions with maximum reduction of the implementation costs. Therefore, the design was particularly complex due to the various disciplines involved: from hydrological-hydraulic studies to the interpretation of geological data in geotechnical terms, through the integration of architectural shapes into the territory and structural analyses performed based on the most recent seismic provisions.
The main critical aspects that had to be taken into account during design were the crossing of the Adda river and the Muzza channel, as well as the restraints due to the fact that the route partially crosses the Adda Park.
