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Complex and spectacular Rijswijk operation completed successfully

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Date

22 April 2020

The new bridge sections for the railway bridge across the waterway at the border between Delft and the town of Rijswijk are large and heavy. The bridge sections were transported and lifted into place over the weekend of 18 and 19 April. The ‘t Haantje level crossing was closed for 60 hours. The first step towards a wider and higher railway bridge suitable for four tracks has been completed.

 

The work was special, because it involved heavy transport, required large cranes to lift the bridge sections into place and a lot was happening in a short period of time in a very tight space. The bridge sections each weigh 87 tonnes and are 18 metres long and 5 metres wide.

A single weekend in which to do all of this work entails many risks. Thorough work planning is of the essence. Our colleague Stef van Gemeren, Planning Officer Strukton Civiel Projecten, started making preparations back in September last year.

“For us the main risk was whether we would be able to responsibly lift a bridge section of that weight and size into place alongside a track that was still in service. How do you prevent the bridge section from touching the live overhead lines?”

The large crane was positioned on Friday evening, because during that night, the land abutment on the side of the DSM company premises was first lifted into place. The land abutment is an essential component because it supports the bridge.

On Saturday morning at 8:20, the first steel bridge section (4.25 metres wide and 17 metres long) arrived in Rijswijk with an exceptional transport escort. This was just in time, because lifting operations started at 9:30.

The first bridge section was in its proper place at 10:30. The rest of the day was devoted to adjusting and fine-tuning the bridge’s position. Next, the lifting crane was disassembled and erected on the other side of the railway to carry out the same work again on Sunday. As a result the second bridge section was also put in place.

This work was a practice run for train-free periods 5 & 6, which are to take place in 2021. These train-free periods (TFPs) are even more complicated in terms of planning and the activities involved. The next bridge sections will be lifted into place during these TFPs. The lessons learned from this work weekend will be incorporated into the work to be carried out in 2021.

The railway bridge is part of the High-Frequency Rail Transport Programme (PHS). The objective of this programme is to refurbish the Dutch railway network to accommodate more trains.

Corona Measures

The ‘Safely Continue Working Together’ protocol established by the ministry was followed this weekend. In addition, the measures needed to respect the 1.5 metre distance were implemented.
For example, this meant coming to work on your own, taking breaks in turns, and as much as possible respecting the 1.5 metre distance while working. We were generally able to do this, because much of the work we did was assembly work.

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Frequently asked questions

Find answers to frequently asked questions here.

How can ageing concrete bridges be strengthened sustainably without full replacement?

Ageing bridges can be reinforced using composite strengthening systems such as SUREbridge, which places a lightweight FRP composite panel onto the existing concrete deck. This method increases load‑bearing capacity, extends service life by up to 50 years, shortens construction time and avoids demolition, lowering CO₂ emissions by around 50%.

What circular and low‑impact materials are used in modern bridge and viaduct construction?

Current sustainable bridge‑building practices include the use of high‑strength concrete, recycled and circular structural beams, and composite panels that minimise the need for new raw materials. Circular approaches — such as reusing beams and strengthening existing structures instead of replacing them — significantly reduce waste, transport movements and environmental footprint. SUREbridge, for example, limits the use of primary materials and enables lightweight installation with minimal environmental impact.

What innovative techniques reduce disruption during bridge renovation or widening?

Techniques like prefabricated composite deck overlays, fast‑curing strengthening systems and modular construction minimise on‑site work and reduce noise, traffic disruption and construction time. SUREbridge, for instance, avoids demolition and can be installed in just a few weeks, reducing inconvenience to road users and nearby residents.

What control systems are required for safe and reliable operation of movable bridges?

Movable bridges rely on advanced bridge‑control and monitoring systems that manage mechanical movements, ensure safety interlocks, support remote operation and monitor real‑time performance. Modern systems integrate sensors, automation and fail‑safe logic to guarantee safe bridge openings while coordinating with traffic, vessels and other infrastructure elements. Many engineering firms specialising in rail and civil infrastructure provide expertise in designing, upgrading and maintaining such systems.

What are key considerations in designing and maintaining railway bridges?

Railway bridges must withstand heavy axle loads, dynamic vibrations and increasing train frequencies. Important considerations include structural stiffness, fatigue resistance, long‑term durability and compatibility with electrification systems. With many European railway bridges exceeding 50–100 years of age, strengthening methods such as composite overlays, high‑strength materials and smart monitoring systems are increasingly used to extend lifespan and ensure safe operations.

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