Park on the covering slab of the C-32 in Tiana-Montgat

A new promenade, a reflection of the layout of the highway, which superimposes a green infrastructure on a road infrastructure connecting the municipalities of Tiana and Montgat.

Parc del Tramvia a Tiana-Montgat
Parc del Tramvia a Tiana-Montgat

Tram Park in Tiana-Montgat

The Tram Park is located on the covered section of the Tiana - Montgat highway and has an approximate area of 60,000 m2, an approximate length of 850 meters and a width of 30 meters. It needs to sow the area affected by the forking of C-32 highway, a buried stretch built for the Olympic Games of 1992, and that crosses Montgat, Tiana, Badalona, and Santa Coloma de Gramanet.


Batlleiroig Arquitectura. Enric Batlle Durany, Joan Roig i Duran – Architect


Iván Sánchez Fabra – Architect / Teresa Galí-Izard – Agricultural engineer


AMB – Àrea Metropolitana de Barcelona, Ministerio de Fomento de España

Construction company


Project status


Start date


Finish date


Outdoor surface

60000 m2
© Jordi Surroca

The mobility restructuration within Barcelona metropolitan area due to the 1992 Olympic Games empowered the splitting of C-32 motorway from Mongat to Barcelona, in order to link it with La Trinitat road junction and, from this point, to the ring roads. This new stretch, called B-20, ran through the municipalities of Mongat, Tiana, Badalona and Santa Coloma de Gramanet, and reached Barcelona. The special topography of the Maresme region and certain environmental awareness judiciously suggested the underground routing of the motorway. However, its urgent construction required that the works were made open cast, instead of executing them with a tunnel boring machine, so a box was created, that consequently had to be filled with soil. On the other hand, the scarce funds which the works were confronted with reduced the depth of the required burying process, so the box outcropped to the surface in some stretches and, on top of that, the workload that it had to support was lowered, so they had to diminish the volume of the land that could be located on top of it with the objective of reforesting the area.

The park is built not only over the tunnel but over the whole of the expropriated area, of some 60,000 square meters. The project doesn’t intend to mask the trace of the highway, but to dignify its footprint on the land.

The project that we carried out aimed to solve the impact of the road infrastructure, to restore the continuity of the territory and to build a park, not only on the 850 m long tunnel, but also in the entire area that had been expropriated for its construction (approximately 60,000 m2). Far from masking the motorway trace, our job was to dignify its mark within the territory, by proposing a promenade along the structure that could complement the reforesting process of the environment. This promenade is organised in two levels: a paved one, conceived as an itinerary for pedestrians and cyclists, and another one with grass, as a huge longitudinal meadow considered as a playground and a picnic area. The pedestrian itinerary is materialised by a 5.60m wide asphalt strip, painted in a blue and yellow checkerboard pattern, and a 4m wide printed concrete strip, that splits in order to overcome the elevation difference between both strips: in a horizontal one and in a variable bank to avoid punctual load transfer over the box. The meadow is made up of a 21.60 m long stretch, which undulates adapting itself to the original topography. Some groups of flowering trees are located

© Jordi Surroca
Plantation of Jacaranda mimosifolia. / © Jordi Surroca
Detail of the meeting of the woods with stands of flowering trees. / © Jordi Surroca
Stands of flowering trees. / © Jordi Surroca
The phases and budget for the construction of the tunnel led to using a box instead of a boring machine, and to reduce the depth of the tunneling, which decreased the volume of earth that could be used to reforest the area. / © Jordi Surroca