• About us
  • Product
  • Documentation
  • News

  • Type: Railway bridge
  • Location: Prague
  • Area: 5,049 m²
  • Product: COLETANCHE® ES4

The Prague Bridge renovation was aimed at increasing rail traffic south of Prague.

This bridge over the Vltava River was built in the 1950s. This bridge is historical and well known throughout the Czech Republic. After the communist party took power in 1948, non-members working in the national administrations were assigned manual labour tasks. This symbolic act highlighted the pre-eminent role given to the working class and explains why the bridge was built by people from intellectual professions (lawyers, doctors, economists, administrative workers, etc.).

It is probably the only bridge in the world that was built by lawyers and doctors. For these reasons it is called the Bridge of Intelligentsia.

The railway bridge consists of a monolithic reinforced concrete structure and supporting arches with a specific thin shape. It has two tracks. One of the tracks is narrower to accommodate the configuration of a modern train in 1950. This track needs to be widened and re-profiled, and the waterproofing layer needs to be redone.

Coletanche was identified as the best solution (applied liquid waterproofing, fully welded bituminous membranes, etc.) to significantly reduce the timeframe by using overlapping waterproofing systems.

The standard use of liquid waterproofing systems or systems fully welded to the substrate requires waiting for the new concrete to dry on the reprofiled areas and time to install a liquid waterproofing system, whether by dispersion, spraying or roller painting. Another option that also takes longer is the installation of fully welded bituminous membranes.

The proposed system, which was quicker, consisted of superimposing Coletanche ES4 and two 1000 g/m2 geotextiles below and above the geomembrane.

The width of Coletanche (5.1 m) matches a European railway’s standard size. The longitudinal installation of one piece of membrane connected to the other only every 55 m (the length of the Coletanche ES4 roll) is currently the most effective system for railway bridges in the world.

It only took four days to install the membrane and the entire job took 10 full days (including steel bar attachment and preparatory work).

bloc info
World implantations
bloc info
References in more than 70 countries
bloc info
30 Million m² laid worldwide
bloc info
5 labels and certifications

We collect and/or access information stored on a terminal, such as cookies, and process personal data, such as unique identifiers and standard information sent by each terminal to measure content performance, obtain audience data, and develop and improve our products.
With your permission, we may use precise geolocation and identification data through those terminal analysis.
By clicking, you can consent to the processing described above.
You may also refuse to give your consent.
Please note that some processing of your personal data may not require your consent, but you have the right to object. Your preferences will only apply to this website.

I agree to the collect and processing of data to measure content performance and obtain audience data

I agree I refuse