| Map of national network grading for road maintenance |
| Map of national network grading for
road maintenance |
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Quality Image of the National Road Network
Since 1992, systematic evaluation surveys on pavement condition have provided a Quality Image of the Entire National Network for each category of roads in the national freeway network - both globally, in the form of histograms and specifically, in the form of itinerary sketches.
Quality image of the entire national network in 1997
| Quality Image of Engineering Structures |
| The Quality Image of
Engineering Structures is obtained from physical indicators of the
state of conservation of engineering structure assets; it is completed by
an assessment of rehabilitation costs.
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