en.Wedoany.com Reported - Mammoet has completed the replacement of a second major bridge at Amsterdam Central Station in the Netherlands, as part of a five-bridge upgrade project linked to ProRail's high-frequency rail transport program. These works aim to support higher train frequencies through track optimization, station infrastructure upgrades, and civil engineering within the railway hub.
Mammoet, in collaboration with Dura Vermeer, was responsible for the loading, transport, and installation of three steel bridge sections built by Hollandia Infra. The bridge comprises two sections each 28.5 meters long and weighing 275 tons, along with a central section 21 meters long and weighing 175 tons. To avoid road transport through central Amsterdam, Mammoet used a flat-top barge to deliver the sections to the Oostertoegang side of the station. The barge was partially submerged to pass under low pedestrian bridges, minimizing disruption while keeping the station operational. For the city-center railway station, water transport provided more space, reduced traffic conflicts, and offered a clearer route to the construction site.
The first bridge replacement in 2025 used Mammoet's Mega Jack 300 system, but the tighter space between the existing structure and the new installation required a different approach this time. The bridge sections were first rotated 90 degrees using self-propelled modular transporters, then lifted by a four-point hydraulic jacking system assembled on the quayside. Mammoet Project Manager Leo de Vette stated that the team had to account for the old bridge's deck and piers, as well as the bridge installed last year, necessitating maneuvering and rotating the new sections beneath these structures before jacking them up with the four-point system. The central section required further sequencing: it was floated into position at a right angle, rotated 90 degrees, jacked up, then temporarily supported on brackets fixed to the two outer sections while the central pier was built beneath it. Mammoet later returned to lower the span onto the new supports. Each deck installation took approximately one week, with Dura Vermeer planning to replace one bridge per year, while the broader renovation of Amsterdam Central Station is expected to continue until around 2030.
