The new A-27 Highway is located east of the city of Valls, in the Alt Camp district of Tarragona. The new roadway section that forms the Valls Bypass is 4.95 km (3.07 miles) long and it has been designed for a design speed of 62 mi/h (100 km/h).
The new roadway is projected as an alternative to the current N-240 between Tarragona and Montblanc, and is planned to satisfy the predictions of a traffic increase in the route. It will achieve the most possible direct access to the Tarragona Harbour and to the AP-7 roadway. It will help in avoiding the dangerous goods traffic through urban areas and taking into consideration the future conexion with the A-2 as well as the supression of the “ Coll de L’Illa”.
The new roadway includes a total of ten structures, divided into three viaducts, three overpasses, two underpasses and two interchanges. The new road includes three viaducts: the Torrente de Les Canyes 439 ft (134 m), the viaduct that crosses over the railway line connecting the cities of Barcelona and Valls 164 ft (50 m) and the one that crosses the Rasa del Seraller River 393 ft (120 m). Most structures are concrete precast beams bridges but our services have also included the design of post-tensioned slabs, from the conceptual design to the construction engineering. Two interchanges have been designed with the T-742 and N-240 roadways; the solution has been to use a diamond like interchange with roundabouts.
Design was carried out meeting the Spanish Code requirement.