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Pedemontana Lombarda Motorway (MP)
The Autostrada Pedemontana Lombarda (Pedemontana Lombarda Motorway) is a strategic work of national importance which is a key element in the new main road structure and economic and territorial growth for Lombardy, especially regarding the goal of the EXPO 2015 Universal Exposition scheduled to take place in the city of Milan.
Project: Dalmine – Como – Varese – Valico del Gaggiolo Motorway Link and related works – Sections B1, B2, C and D.
Location: Lombardia, Italy.
Client: Autostrada Pedemontana Lombarda S.p.A..
Cost of total Works: 3,508,599,907 €
Services: Final project.
In this context the works participate in a new infrastructure system including the new Brescia-Bergamo-Milan Motorway (Bre-Be-Mi) and the Milan Outer East Bypass road, programmed and designed by the Lombardy Region, often with the important collaboration from Technital S.p.A.
The basic goal that is to be pursued by building these works, which envisage construction of a new motorway with 2 and, in certain sections, 3 lanes in each direction, is to update the infrastructures to the territory’s internal and external mobility requirements, a territory which is the most urbanized and industrialized in Italy (300,000 businesses which generate 10% of the national GDP). This goal is achieved, in addition to building a new 70 kilometer motorway connecting the A8 motorway to the north-west of Milan with the A4 to the west of Bergamo, by also integrating the motorway with the existing road network. For this purpose, it was necessary, to examine interchange areas with particular attention and, in many cases, strengthen and supplement existing roads to increase territorial access from the areas that are crossed.
Consequently Sections A, B1, B2, C and D of the Pedemontana Lombarda Motorway and completion of the Como and Varese bypass roads basically take the form of a system for strengthening and reorganizing the traffic system in the northern part of the Provinces of Milan and Varese, Como, Monza Brianza and Bergamo by, on the one hand, increasing transport facilities and, on the other hand, improving the levels of service and safety standards of the existing road network.
Construction works, the bridge over the Adda river, innovative technological solutions and the greenway.
The works, from the technical and environmental feasibility standpoint, are extremely complex given the great length of the alignment which is inserted in a densely populated territory. It was necessary, in this context, to solve road crossing, intersection and critical situations with the surrounding territory, designing important construction works such as bridges, viaducts, artificial and natural tunnels. Section C, where the Motorway has 3 lanes in each direction, is built mostly below ground level, making it necessary to design long sections of artificial tunnels and retaining works made with diaphragms to minimize interference with and preserve the stability of adjacent buildings.
Crossing the Adda River Park, in section D, required finding a solution that combined the structural requirements of a large span bridge with the environmental and architectural requirements when crossing the park. A team of university professors carried out a dedicated feasibility study to find the best solution that combines these two aspects, directing the choice to a through arch bridge with a 165 meter span to cross over the river. This architectural-structural type, in addition to recalling the “language” of existing bridges over the Adda River, all featured by similar structures, also makes it possible to combine with the same structural type for the bridge for the future adjacent Seregno-Bergamo railroad line.
The Pedemontana Lombarda Motorway shall probably be the first Italian motorway characterized by a “free flow” toll collection system where it is not necessary to stop vehicular flow and consequently with the possibility of eliminating classic tollgates and toll booths which are always a troublesome element for motorway users and also for inserting these elements in the environment. A toll system has been designed which, using optical vehicle license plate readers and microwave detectors, can automatically “read” the vehicles as they pass under specific portals that straddle the road.
The project also includes, in addition to specific environmental impact mitigation works, a “wide-ranging” program of environmental compensation works for the purpose of strengthening the system of parks and the environmental continuity between the Ticino and Adda rivers. The backbone of this system is the Greenway, an approximate 100 kilometer pedestrian-bicycle path running parallel to the motorway and connecting together approximately 50 local environmental projects fostered by and agreed with the Municipalities and Park Authorities involved.
The main characteristics of the works
Section A and the 1st lots of the Como and Varese Bypass Roads were assigned, as General Contractor, to the Consorzio PedeLombarda S.c.p.A. (Impregilo S.p.A. – Astaldi S.p.A. – Impresa Pizzarotti e C S.p.A. – A.C.I. S.c.p.A.).
Sections B1, B2, C and D - the 2nd lot of the Como Bypass Road and the 2nd lot of the Varese Bypass Road were designed, at the level of final project, by the Consorzio CIIL (Consorzio Italiano per le Infrastrutture Lombarde - Italian Association for the Lombardy infrastructures) composed of the design companies TECHNITAL S.p.A. – Idroesse Infrastrutture S.p.A. – Girpa S.p.A. – E.T.S. S.p.A. – Errevia S.r.l. – SPM Consulting S.r.l. – Proginvest S.r.l. Technital, as part of the Consorzio CIIL, carried out general coordination of the entire project, setting up its own coordination and interface structure with the client for all design themes. It also carried out, again for the entire project, geotechnical design and the environmental monitoring plan and then, specifically in sections C and D, it designed the road structure of the main roadway and connected works including bottoming water collection and treatment systems and structural design of all main and ancillary construction works both in the open air (bridges, viaducts, overpasses) and underground (artificial and natural tunnels and underpasses) including construction site design for the works.
The final project for the entire “Collegamento Autostradale Dalmine – Como – Varese – Valico del Gaggiolo ed opere ad esso connesse” (Dalmine – Como – Varese – Valico del Gaggiolo Motorway Link and related works) was approved by the Interministerial Committee on Economic Programming (C.I.P.E.) by resolution No. 97 dated November 6th, 2009. Construction works for sections B1, B2, C and D were contracted out on February 17th, 2012.
The following section summarizes the main characteristics of sections B1, B2, C and D and of the Como and Varese Bypass Road lots.
Length of the motorway in sections B1, B2, C and D: approximately 50.50 kilometers from the junction with the A9 Motorway up to the A4 Motorway at Bergamo;
Length of extension of the Como and Varese Bypass Roads: approximately 10 kilometers;
Ancillary roads – 13 works building new ancillary roads;
Standard Section: Category A – Urban and suburban motorways with two and three lanes (Section C) in each direction (L=3.75 m) and hard shoulder (L=3.00 m);
No. 3 motorway junctions: A9 Motorway, Milan East Bypass Road, A4 Motorway;
No. 13 motorway interchanges;
System of compensation works: 100 kilometer pedestrian/bicycle path (greenway) coordinated with 50 local environmental projects.