Condition classes

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The map below displays, for all countries for which data is available, the number of condition classes used.

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Number of condition classes used


A competent engineer with relevant experience in the inspection of structures or structural planning is to be entrusted with the management of the inspection. This person must be able to assess the basic structural condition of the object to be inspected and estimate the influence of damage on the load-bearing capacity, serviceability and durability of the structure. Depending on the size of the objects to be inspected, he must have personnel and suitable equipment. If the specified scope of testing is not sufficient, special tests must be arranged. In the course of the assessment, the evaluation of the following components should be planned:

Substructure Foundation elements, abutments, piers, wing walls, channels, embankments
Superstructure Supporting structure
Surface course pavement, sidewalk and cycle path pavement and their connections Bridge bearings
Expansion joints Expansion joint structure including elastic pavement expansion joints
Waterproofing drainage Bridge waterproofing and drainage facilities such as drains, drain pipes, fasteners
Border beams Border beams including curbs and border beam joints
Other equipment Railings, vehicle restraint systems, noise protection equipment, splash protection, drop guards, lighting, lines, general traffic signs, object-related traffic signs (e.g. clearance, weight restriction), etc.

Maintenance strategy and limits

For the component assessment, condition grades are to be assigned for the individual components and, based on this, for the entire object.