LINK ROAD TO LA SPEZIA PORT HUB
|Country||ITALY - LIGURIA|
|Services provided||Detailed design, Safety coordination during the design|
|Period of execution||09/09/2010 – 07/03/2011|
|Construction cost||€ 179,722,690.54|
|KEY FACTS / KEY DATA||5 km highway + 5 km link roads
3 cut-and-cover tunnels
Category C1 "Country road secondary"
This infrastructure is the main artery of the area’s road network, and forms part of a wider project for the territory consisting of upgrading the entire transport system in Liguria. Anas is committed to the construction of a Nuova Aurelia as a modern technological transnational super highway, with the aim of facilitating functional connections between the French and Italian networks on the Tyrrhenian side, as well as ensuring that the whole territory is equally served by the regional road network. The project section must satisfy many critical functions for the area’s transport network, since it assumes the configuration of a city bypass, connecting with the motorway link road and circling round the built-up area, as well as providing access to the Port Hub of La Spezia.
Its total length is about 10 Km.
For the integrated tender project, Lotti – with the close collaboration of a construction company – developed improvements and changes to the project on which the tender is based for the purpose of presenting their proposal, thereby obtaining the best score for their technical proposal and being awarded the contract.Subsequently the detailed design was carried out.
THE PROJECT: CHALLENGES AND SOLUTIONS
Owing to the area’s morphological and environmental restraints and the need to include four intersections, the geometry of the road axis is extremely variable.
The layout includes 6 natural and 3 artificial tunnels (totalling around 64% of the entire section) alternating with outdoor sections in which the four intersections are located.
The most critical point during design was the extremely variable conformation of the road layout, which had to be adapted to existing road networks and to the particular orography of an area with considerable environmental restrictions, made even more critical by the rigid road geometry introduced by new regulations. Design standards were defined during a ‘transition’ phase in the regulations.
The intersection studies required special attention, with the adoption of some unusual geometries and solutions (such as underground ramps) to satisfy both technical, functional and safety requirements, and those imposed by the highly difficult topographic, urban and environmental restrictions, which were also the subject of a careful architectonic study aimed at reducing visual impact, and producing the most harmonious structure possible.
Visually, the intersections’ infrastructure and the motorway link road have been distanced from the built-up area, at the same time producing a harmonious merging of the motorway and intersection infrastructure with those pertaining to the local service road system.
- final design
- detailed design
- Safety coordination during the design