Brotonne bridge

Beginning of 2017 IGN deployed for the account of Conseil Departemental of Seine Maritime a complete system of geocubes on a cable-stayed bridge, close to the city of Rouen. The idea is to monitor 4 times a year the move of the bridge with a millimetric precision. This was usually done with classical tacheometer survey. The use of geocubes enable to do it in real time while keeping the maximum accuracy.

map brotonne

Some of the point were placed in the walkway and had to be out of range of curiosity:

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Some device had to be placed on top of the pile.

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the first results are being produced…