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Use InfraWorks 360 preliminary design software (US site) models inside of AutoCAD Civil 3D. Then take design data back to the InfraWorks 360 model. Incorporate surfaces, the planning and designing of roads, junctions, drainage networks and bridges created in InfraWorks 360. Link the Civil 3D drawing as a data source to populate the InfraWorks 360 model with detailed design. Use configuration settings to define how InfraWorks objects map to Civil 3D styles at import.