3D laser scanning of a swing bridge; [3D-Laserscanning einer Drehbrücke]

Abstract

Three-dimensional laser scanning offers a detailed and efficient method for documenting complex structures such as swing bridges. The technology captures large numbers of spatial measurements and creates a detailed point cloud that can be used to represent the geometry of a bridge and its surrounding environment. For a swing bridge, accurate documentation is particularly useful because the structure contains moving and interconnected components that may be difficult to measure with conventional methods. The article examines the use of 3D laser scanning for recording such a structure and highlights the value of digital measurement for surveying, documentation, inspection, and further engineering work. Point-cloud data can provide a reliable basis for producing measurements, visual representations, and three-dimensional models while reducing the need for repeated manual measurements in difficult locations. The method can also support comparisons between different states of a structure and provide useful documentation for maintenance activities. By combining high-resolution spatial capture with digital processing, terrestrial laser scanning can improve both the completeness and efficiency of bridge documentation. The swing bridge example demonstrates how modern surveying technologies can contribute to the preservation, analysis, and management of infrastructure assets. An additional advantage is the creation of a durable digital record that can be revisited when maintenance, restoration, or engineering decisions are required. Consistent scanning procedures can also make repeated surveys easier to compare, supporting the long-term monitoring of structural changes and helping organizations manage bridge information more systematically.