Project Highlights
| Sector | highways and roads | |
| Country | Russia | |
| Location | St. Petersburg | |
| Type of Contract | E.P.C. | |
| Contract value | EUR 2.2 billion (50% Astaldi stake) | |
| Customer | Northern Capital Highway (NCH) consortium | |
| Contractor | ICA Astaldi-IC Ictas WHSD Insaat A.S. | |
| Progress | completed | |
| Construction | from 2012; to: 2016 |
Description
The contract referred to the general contracting project to build the link between the northern and southern sections of the Western High Speed Diameter in St. Petersburg, a work of strategic importance for the city's transport system.
The project involved the design and performance of the most technically complex section of the motorway link: it measures 12 km in length, 8.1 km of which are viaducts, mostly over the Baltic Sea, with two cable-stayed bridges for ships to pass through.
Construction of the viaducts also entailed the performance of complex seabed foundation works.
WHSD construction foreseen the employment of 234,000 tons of steel, 600,000 cubic meters of concrete and earthworks of 3,350,000 cubic meters of earth and sands.
Commissioned by NCH (a consortium set up by VTB Capital and Gazprom Bank) the project was extremely demanding in its engineering and in terms of its construction and logistics, due to its location and the characteristics of the works: an 8-lane motorway carriageway, largely on the Baltic Sea, with 2 cable-stayed bridges (total length: 1.2 km) and a 2.5 km cutting on the coastline below sea level, with a 410 m tunnel running beneath the Smolenka River.