The infrastructure, which had been closed to traffic heading outwards since August 3rd, was reopened at 7 AM this Monday, as reported by the delegate for Urban Planning, Environment, and Mobility, Borja Carabante. These works are a further step towards the future connection with the new A-5 tunnel.
Carabante explained that the tunnel will remain operational for the coming months, although a new closure will be required at the end of the year. This interruption, planned between late November and early December, will be carried out to execute the definitive connection between both infrastructures, aiming to minimize disruptions for drivers.
The objective is that, after this final closure, traffic can circulate through the entire new tunnel and connect with the M-30 before the end of 2026. The work carried out during August included the demolition of the concrete slab of the existing tunnel's exit ramp, excavation to the final level, and the construction of the new structure.
During the night, 14 large-tonnage beams, each 30 meters long, were installed to span the gap between the abutments, requiring the use of a large crane and the full width of the roadway. These beams will connect the existing M-30 tunnel with the already completed A-5 tunnel.
The delegate highlighted that the established schedule is being met, with the civil works for the underpass project nearing completion. Equivalent work on the tunnel entering Madrid was finished in the summer of 2025.
In parallel, the City Council will begin surface urbanization works at the end of September. The A-5 underpass project, with an investment of approximately 410 million euros, will free up over 100,000 square meters to create the future Paseo Verde del Suroeste, a 3.2-kilometer corridor connecting Madrid Río, Casa de Campo, and Cuña Verde de Latina.
This initiative aims to improve connections between neighborhoods and significantly reduce surface traffic, which currently handles around 80,000 vehicles daily. The reclaimed surface area will incorporate new green spaces, pedestrian, and cycling routes, linking areas separated by the A-5 since 1968.
