Nordic Crane Heavy Lift installed the King Frederik IX lift bridge in Denmark using an Enerpac JS-250 jack. The structure, designed to carry trains across the Guldborgsund strait, was lifted from a barge with an accuracy of less than 10 mm. The movable section, which is 20 meters long and weighs 120 tons, was positioned next to the existing bridge.
The new bridge, with a total length of 300 meters, reinforces a strategic axis of the Danish network, which is set to absorb the increase in rail traffic linked to the Fehmarn Belt fixed link project. MT Højgaard Danmark was responsible for supplying the bascule bridge, designed to open to allow even the tallest ships to pass through.
Built off-site, the steel flap was transported by barge and then lifted five meters using the Enerpac JS-250 jack, installed on the barge deck. After positioning above the support piles, the element was lowered with fine adjustments made using the system's adjustable upper cylinder. According to Nordic Crane, the stability and compactness of the jack facilitated the operation in a confined space.
The Enerpac JS-Series system
The JS-250 is part of the Enerpac JS-Series range of jacks, a multi-point lifting system consisting of towers incorporating hydraulic jacks. Lifting is performed in automated increments, with synchronous management ensuring load balance, under the control of a single operator.
