ACCIONA Construction took part in the presentation of the Ministry of Public Works’ 2018-2020 Transport and Infrastructure Internationalisation Plan on 13 December, in Madrid. This plan includes a collection of initiatives to create and improve opportunities for Spanish companies abroad, reinforcing their international activity and strengthening Spain’s image in technology, innovation and business.
As part of this event, the Ministry selected several Spanish companies to present one of the projects they are involved in abroad. ACCIONA Construction was one of those companies, and the project selected was Legacy Way, in Brisbane, Australia. This project involves two 4.6 km parallel tunnels designed to address the traffic problems caused by the rapid growth of Brisbane, Australia’s third-largest city. The contract awarded to ACCIONA includes design and construction, in addition to operation and maintenance for a period of 10 years.
The Legacy Way project involved significant challenges, including technical difficulties, tight deadlines due to the needs of the population and, above all, the need to act with absolute respect for a very sensitive environment.
One of the measures in this area was to create a large acoustic shed to mitigate noise. This made it possible to conduct assembly and tunnelling work 24 hours a day, with minimal noise impact on the surroundings. Concern for the environment was also reflected in the management of tunnel excavation material. The solution was to use a conveyor belt that evacuated the rubble to an unused quarry. This significantly reduced the noise and dust generated, and, especially, it avoided 180,000 lorry journeys and the emission of over 1,000 metric tons of CO2.
In addition to these measures, the speed with which the works were completed and shorter transit times have led to significant environmental benefits. Here, mention was made of the world records for drilling set by the two TBMs used by ACCIONA Construction, which bored up to 50 metres in a single day. In addition, they highlighted the fact that the 20,000 daily tunnel users save 14 minutes per journey.
The 2018-2020 Transport and Infrastructure Internationalisation Plan involves 110 specific initiatives, undertaken in 11 priority markets and nine opportunity markets, with an investment of over €2.5 billion in the coming 10 years. One of the most significant measures is the creation of the Spanish Transport and Infrastructure Monitoring Centre, which is to bring greater consistency, coordination and complementarity to international efforts by Spanish companies.