NEWS | HEAVY BRIDGE LIFT
HOLLANDIA SERVICES COMPLETES BOEKHORSTBRUG RENOVATION WITH ENERPAC CUBE JACKS
H
ollandia Services, a Dutch infrastructure company, has successfully completed the renovation of the
Boekhorstbrug in The Hague, Netherlands, utilizing Enerpac SCJ-100 Cube Jacks for a bridge lifting and installation process. The use of these cube jacks not only streamlined the project but minimized disruption to the local community. The Boekhorstbrug, an aging table bridge that has been in operation since 1976, required extensive refurbishment due to outdated hydraulic and electrical systems, as well as the need for a new road surface and bridge coating. Traditionally, Hollandia would rely on mobile cranes for such operations, but in this case, both land and vessel-based crane options were not feasible. Instead, the company’s engineering team devised a creative solution: lifting the bridge using Enerpac Cube Jacks to transport and rotate it for off-site refurbishment. The lifting operation began with the bridge being raised 0.45 meters using its own hydraulic system. Steel baffles were then slid underneath the bridge, and climbing jacks were placed at each corner to raise the structure further to 0.65 meters. At this height, the Enerpac SCJ-100 Cube Jacks were positioned beneath the bridge deck to take over the lifting process. Powered by a split-flow hydraulic pump, the Cube Jacks provided the necessary force to lift the bridge incrementally and safely.
The Enerpac Cube Jacks are in position ready to receive the refurbished bridge. The SCJ-100 Cube Jack, a compact
100-ton capacity system, uses self-aligning, lightweight steel cribbing blocks to offer stable lifting. These blocks, weighing under 25 kg, are much lighter than traditional wooden cribbing, making them easier to handle and contributing to significant time savings. According to project coordinator Emiel Maas, the Enerpac Cube Jacks enabled the bridge to be lifted to a height of 3 meters in just 20 minutes, allowing the bridge to be rotated 90 degrees and transported to the Krimpen aan den IJssel wharf for refurbishment. “Enerpac Cube Jacks provided the
perfect solution for our challenge,” said Maas. “The speed and efficiency of the
Cube Jacks allowed us to complete the operation safely and with minimal downtime.” For the reinstallation of the renovated bridge, the process was reversed. The bridge was lifted back to 3 meters, positioned onto a flatbed trailer, and returned to its original location. The Enerpac SCJ-100 Cube Jack offers
a safer, more controlled, and time-efficient alternative to traditional climbing jacks with wooden cribbing, making it ideal for heavy lifting projects. The self-locking mechanism and ease of use also contribute to greater operator safety, as the load is mechanically secured before the cribbing is inserted or removed.
Enerpac Cube Jacks take over from the Climbing Jacks The raised bridge awaiting slewing ring
rotation. 14 | February 2025 |
www.hoistmagazine.com
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