IC32 - Viaduct of Freiras/Viaduct Valadares

Customer:
MSF ENGENHARIA, S.A.

Local:
Coina - Portugal

Year:
2012

Work done:
Reinforced concrete structure

Deadline:
20 months

Concrete:
13.400 m3

Formwork:
19.700 m2

Shoring:
55.000

Intervention area:
Transport Infrastructures


Steel: 
1.550.000,00 kg

Special foundations:
187 m of piles of 1500 mm diameter
390 m of piles of 1000 mm diameter
576 m of piles of 600 mm diameter


The project consists of the execution of two viaducts, seven engineering structures (upper, lower and agricultural crossings), several retaining walls located along the 8 km of the road, including also earthmoving, execution of piles and all the finishes.

This contract was part of the Baixo Tejo concession and connects 9 municipalities on the south bank of the Tejo River, benefiting about 715,000 inhabitants, allowing an improvement in accessibility to the various investments in progress in the region.

Viaduto das Freiras consists of two bridge decks with approximately 15m wide and 150m length. The bridge deck was executed with a traveling formwork (FCM's own solution) with falsework. The circular pillars were around 10m high.

The Valadares Viaduct has a prefabricated tray and consists of 2 bridge decks with a total of 25m width and 275m length. The work was implanted on a sanitary landfill where there was aggressive residuals for the concrete. To guarantee the durability of the work the foundation piles were executed with a protection constituted by a metallic pipe.