The Singapore Mass Rapid Transit (MRT), Singapore

The Mass Rapid Transit (MRT) system in Singapore is the city’s primary rail network, inaugurated in 1987. Renowned for its efficiency and extensive coverage, it serves both central and peripheral areas with six main lines and over 130 stations. This system is a model of modernity, designed for millions of daily commuters, enhancing urban mobility in one of the world’s most densely populated cities. For the Singapore MRT, Webuild has built three stations: Orchard, Somerset, Tiong Bahru.

The Orchard Station, located along Orchard Road, is one of the most prestigious and complex stations in the MRT system. It’s a four-level underground structure in reinforced concrete with a central dome for natural light, and twin tunnels with a diameter of 5.2 meters spanning 3.6 km. The management of heterogeneous ground required the use of a TBM cutter and explosives for tunnel excavation.

The Somerset Station was built with a two-level reinforced concrete design and intended as a "civil defense" station resistant to air attacks and capable of serving as a shelter in emergencies. The station's dimensions, 187 meters by 26 meters, required excavations up to 15.2 meters deep, stabilized with rigid retaining walls and sheet piles.

The Tiong Bahru Station is a two-level underground station in reinforced concrete, measuring 210 meters by 24 meters and with excavations reaching depths of up to 15 meters. This station also features a "civil defense" design with a shotcrete lining. The contract included the construction of twin tunnels using the "cut and cover" method and various parallel pipelines.