Bilbao in northern Spain is suffering from increasing levels of vehicle congestion, a problem the city authorities intend to tackle. Two major civil engineering projects have been proposed in a bid to address the problem. One of the projects would be to drive a 3km tunnel under the main estuary, improving transport and traffic flow between the north and south of the city. The tender process for a feasibility study into this project I being put to tender.
Meanwhile the second major project proposed would be to extend the existing Supersur highway so as to improve access to the southern side of the city. In all the two projects are expected to cost a total of €580 million. If all goes to plan, the two links should be ready for traffic by 2027.