Heritage bridges are an essential part of our transportation infrastructure and cultural heritage. They serve as important landmarks and provide connectivity between different parts of the city. However, many of these bridges are facing the risk of decay and deterioration due to age and lack of maintenance. Preserving these bridges is crucial to ensuring their continued existence and functionality for future generations. The use of drones and 3D models is changing the way we preserve heritage bridges.
Drones have become so popular in recent years, with applications ranging from aerial photography to emergency response. However, they are also valuable tools for bridge inspecting and helping with preservation. Drones equipped with high-resolution cameras and sensors can capture detailed images of bridges from various angles and heights, providing great data on the bridges condition. This data can be used to identify areas of deterioration, corrosion, or damage that may be invisible to the naked eye.

Drones For Structural Inspections
Drones can also be used to conduct structural inspections of bridges. Traditional inspection methods often require the use of heavy machinery and cranes, which can be costly and time-consuming. Drones can access hard-to-reach areas, such as the undersides of bridges and high-level areas, without requiring any of this equipment. This not only saves time and money but also reduces the risk of injury to workers when finding bridge defects.
3D Models Of The Structure
Once the data has been collected, it can be used to create 3D models of the bridge using software such as context capture or metashape just to name a few . These models provide a detailed representation of the bridge’s geometry and structural integrity, allowing engineers and preservation experts to analyze the data more effectively. By using 3D models, it is possible to simulate different scenarios and predict how the bridge will behave under different conditions and aid at all stages of bridge inspection levels. This information can be used to create more effective preservation strategies and reduce the risk of failure.

The Humber Bridge, UK
One example of the successful use of drones and 3D models in heritage bridge preservation is the Humber Bridge in the United Kingdom. Built in the 1970s, the Humber Bridge is one of the world’s longest suspension bridges, spanning 1.4 miles over the Humber estuary. In 2016, the bridge underwent a major inspection using drones and 3D models. The inspection revealed areas of corrosion and damage that had gone unnoticed in previous inspections. Using the data gathered by the drones, engineers were able to develop a more targeted preservation plan, which included the replacement of corroded steelwork and repainting of the bridge’s cables. The use of drones and 3D models allowed the preservation work to be completed more efficiently and effectively than ever before.
3D Models For Heritage Bridge Preservation
Heritage bridge preservation is crucial to ensuring the continued functionality and existence of these important landmarks. The use of drones and 3D models is revolutionising the way we approach bridge preservation, providing valuable data on bridge conditions and allowing engineers to develop more effective preservation strategies. By using these technologies, we can ensure that heritage bridges continue to serve as important cultural and transportation assets for future generations.