Zona do Grande Porto, Portugal
The Grande Porto Concession includes a set of road infrastructures located in the main road axis/ motorways and fast tracks of Oporto city metropolitan area, namely the IP4, VRI, IC24, IC25 and EN207. Cenor’s involvement focused on two stretches: Ermida (IC24)/ Paços de Ferreira interchange and Airport (IC24)/IP4-VRI interchange. Within this framework, the design projects of 17 overpasses and 10 underpasses were developed in all their different phases. Traditional structural solutions were used with decks of precast prestressed concrete box girders with main spans of about 30m. The overpass in the road leading to the Port of Leixões stands out for its complexity in terms of design and construction, mainly due to road, railway and constructive restrictions as illustrated in the Figure.