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    M-30 Southern Bypass Madrid

    The $697-million project involved the construction of a 4.1-km long city tunnel, with three 3.5-m lanes, 0.5-m emergency lanes and 0.7-m sidewalks. These tunnels were between the San Isidro and Praga Bridges, including the interchange between the Pirámides and Marqués de Vadillo roundabouts, the twinning of the M-30 between SantaMaría de la Cabeza, and the N-III junction near Conde de Casal.

    A 3,538 m section of the tunnel was excavated with Dulcinea, the largest Earth Pressure Balance shield at the time of construction, with a diameter of 15.62 m.

    General Information

    Location
    Madrid, Spain
    Contract type
    Construction
    Infrastructure
    4.156-km long city tunnel with three 3.5-m lanes, 0.5-m emergency lanes, and 0.7-m sidewalks. A 3,538 m section of the tunnel was excavated using Dulcinea, the largest EPB shield at the time of the construction, with a diameter of 15.62 m. The project consisted of the underground routing of the 4.2-km main carriageway of the M30 Bypass in two sections in Madrid
    Year of project completion
    2007

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