Boadilla del Monte Light Rail Madrid

13.70 km

LENGTH

70 km/h

MAX. SPEED

CDM System

TRACK SYSTEM

The ML3 light metro line connects Colonia Jardín, a neighborhood in the La Latina district of Madrid, with Puerta de Boadilla, in the municipality of Boadilla del Monte, in the west of the city. This line is part of Madrid’s public transport system and provides a fast and efficient link between these two areas.

€145 M

Budget

Madrid

Location

MLOSA*

Client

Construction

Contract type

2005-2008

Construction period

*METRO LIGERO OESTE, SA

Azvi

Description of work

This project is part of an ambitious plan to provid Madrid with a light rail network connecting the center with the main towns on the outskirts of the city. The train line is integrated into the existing station on Line 10 of the Madrid Metro.

The main features of the line are:

Electrified double track with a width of 1.435 m.
Design speed: 70 km/h on interurban sections and 50 km/h in urban areas.
Number of Stops: 19.
Number of Structures: 12.

The track used on this line was Rl-60N grooved rails, on a ballastless track system in accordance with the CDM prefarail patent. An elastomeric blanket was used on sensitive sections to reduce vibrations.

The track has different finishes, such as, stamped concrete, prefabricated paving stones and agglomerated concrete, depending on the development of each a rea.

Two crossings were installed to facilitate the operation of the line in the event of incidents or to create partial routes.

The works also included the construction of 6 traction substations, 3 above ground and 3 underground.

Key figures

424,538 m³

Excavations

324,784 m³

Embankments and fills

58,170 m³

Stabilised soil type S-EST2

30,413 m³

Mortar column (⌀300)

81,830 m²

Bituminous paving mix

40 km

ln-situ concrete piles

9,048 t

Corrugated steel

87,422 m³

Concrete

476 t

Structural steel

28 km

Track assembly

Turnouts

19,116 m²

Elastomeric blanket

4,712

Aluminothermic welds

Azvi

Azvi

Main Challenges

A double micropile umbrella of 20 m in length was built to improve the stability of the excavation in the tunnel entrance areas.
A treatment using mortar columns was carried out, with the execution of 30,414 m of mortar columns, to guarantee the stability ofthe quaternary strata presenta long the route.
Dynamic compaction was carried out in the area adjacent to the depots to reduce possible settlement of the strata formed by the existing quaternary deposits.