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On-site inspection of the structures to document the differences with the design drawings, contacting the contractors to obtain the records (if any) of alterations made during the construction of structures.
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Upon the data determined from the flight over the motorway and orthographic photos, an as-built survey of the project is determined digitally. All the structures are investigated in CAD with the use of the flight data.
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Preparation of as-built drawings for each structure via reflecting the documented changes in conjunction with the official reports prepared by the contractors and field surveys.
