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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
16
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.

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