- Developing knowledge in bridge renovation.
- New form of incentive-based contract.
- Comprehensive Bridge Information Model.
More than 200 steel bridges in the Netherlands, built in the 60s and 70s, and many more in Europe, are potential victims of fatigue-related defects.
Rijkswaterstaat, the Dutch Directorate-General for Public Works and Water Management, is committed to the refurbishment of eight steel bridges in the Netherlands, providing strengthening design and engineering for an extended life of at least 30 years.
This work is being carried out by an Arup Royal Haskoning Greisch joint venture, acting as the managing contractor. Greisch, as a sub-consultant, is performing the role of technical reviewer.
The eight bridges are large, landmark and fairly new – with spans ranging from 100 to over 300m. They are a variety of cable-stayed, arched and beam-slab bridges spanning road, river and rail at strategic points in the Dutch highway network.
Learning design lessons
As well as being a first step in developing expertise in bridge renovation, this project will also benefit the design of new steel bridges. The end users of new bridges will benefit from the effort invested and lessons learned from these renovations, including reduced traffic nuisance and improved construction methods.
By creating a new form of ‘cost plus incentive fee’ contract, Rijkswaterstaat is aiming to fully utilise market capabilities and encourage market players to undertake more management tasks.
Arup’s role includes all technical management activities – from the development of pre-inspection plans and 3D modelling of existing structures to the design of strengthening measures.
The firm are also responsible for the choice and management of contractors, for the technical tender documents, and for input and review of project specifications for the eight bridges.