Progetti

The project concerned the rehabilitation and upgrading of the mountainous National Road SS118 Corleonese Agrigentina to comply with the  Italian Design Standard for Roads and Interchange, including the design of several intersections.

Sering carried out the Preliminary design of the whole project and the Detailed design of Lot 3 from km 18+700 to km 24+650, that includes:

• Trunks on the existing carriageway for a whole length of about 3.4 km
• Scalilli Viaduct 140 m long with steel–concrete structure, 40 m length each span,
• Box underpasses
• Sheet-pile walls
• Two intersections
• A cycling route

Services provided by Sering

• Identification of alternative layouts
• Geological, geomorphological and hydro-geological studies
• Traffic study
• Environmental Impact Assessment
• Detailed design
• MEP

Within the scope of the Environmental  Impact  Assessment, in addition to the local stone lining of the hydraulic works, the arrangement of the parts of the rivers banks immediately downstream the works with “Reno” mattresses; the spondal protection by means of grooves along the course of the river Frattina. Particular attention has been paid to cycling routes as well as to ecological routes.

The new planned alignment required the eradication of part of the vegetation which, by the characteristics of the root system, could not be saved by replanting. Therefore, the vegetation plant ex-novo was planned of plants of the same species so as not to alter the landscape.