Underground works on the M-30 Road

The M-30 is a ring road that goes around the center of the city of Madrid; along its route, it connects with the main national highways. The project consists of taking the 620 meters of the M-30 that run under the old grandstand of the Vicente Calderón stadium underground.

What is the M-30 underground project?

The M-30 underground project is part of a series of initiatives promoted by Ferrovial and Madrid Calle 30 to improve mobility and sustainability in the center of Madrid (Spain).

It involves covering 620 meters of the highway under the former grandstand of the Vicente Calderón stadium in the Arganzuela district, integrating the tunnel route with the Madrid Río urban park.

Where are the works located and what section do they cover?

The works are being carried out on the left bank of the Manzanares River, between the Toledo and San Isidro bridges.

This was the only section of the southern arc of the M-30 that remained above ground, as it passed under the west stand of the stadium.

Its underground construction provides continuity to the underground route of Calle 30.

What are the project’s objectives?

The project aims to:

• Improve traffic safety and flow on the M-30.
• Remove the physical barrier separating the city from the Manzanares River.
• Expand the Madrid Río park with new green areas.
• Reduce the environmental and noise impact of urban traffic.

Overall, this is a project that combines mobility, urban integration, and sustainability.

How is the tunnel being built?

The project involves the construction of a 620-meter-long false tunnel, with a width of between 21 and 26 meters.

The new infrastructure will include:

• Ventilation and fire control systems,
• Intelligent traffic management,
• And a direct connection to the existing underground sections of Calle 30.

During the 20 months of construction, traffic will continue to flow in both directions thanks to a temporary detour built under the demolition site of the old stadium.

What impact will this have on Madrid Río and the urban environment?

The underground construction will allow for the expansion of Madrid Río park, creating a new green area with trees and native vegetation.

In addition, by eliminating surface traffic, the neighborhoods of Arganzuela will regain their natural connection to the river, promoting a safer, more accessible, and sustainable environment for pedestrians and cyclists.

What other similar projects has Ferrovial been involved in?

Ferrovial and Calle 30 have collaborated on other urban underground projects in Madrid, including:

• the South Bypass,
• the North Tunnel,
• and the section between the Segovia and San Isidro bridges.

These projects consolidate Ferrovial’s experience in underground infrastructure and sustainable mobility.