The five contractor consortium building the huge ú1.4bn extension for Madrid's Barajas airport in Spain is rushing to complete steel assembly for the 1.2km long 'wing' of the main terminal, following delays from heavy rains this winter. Basic interior fit out is due for completion early next year. The roof has design input from British consultant Anthony Hunt and TPS Carillion. It spans 72m along its entire length following a three dimensional curving form held in tension at each end. Architect is Sir Richard Rogers working with Madrid architect Estudio Lamela. The contractor group comprises FCC, Ferrovial, Necso, Sacyr and ACS.