Project design and construction of the main Bus-HOV lane viaduct, on the C-58 Motorway (Barcelona)

Abstract

<p> The main Viaduct for the Bus-HOV lane is formed by an elevated structure, the piers of which are located in the space between the two decks of an existing viaduct, belonging to the C-58 Motorway.</p><p> The deck is formed by a spatial metal tube structure supporting a concrete platform on which the carriageway runs (Figure 1).</p><p> Unknown for this type of structure, the construction system developed consisted in erecting 100% of the deck and piers without the support of the existing viaduct’s decks which were only occasionally used for auxiliary aid jobs, control and inspection whilst traffic did not have to be cut off at any time.</p>