Existing methods for inspecting bridges and collecting data are expensive. Hiring or mobilizing specialty crane equipment will easily cost a minimum of $2000 each day not including, minimum engagement costs, freight, insurance and the requirement for specially trained operators. Equally, deploying scaffolding is both complex and expensive.
Add to this the time in management to bring complex operations like this together, the time required each day to mobilize, the time to management coordinate traffic, costs are significant.
Using drones to inspect bridges is one of the best use cases for this technology. What normally takes weeks and months and significant effort and management can now be done in hours or days. Even if the costs weren’t lowered (and they are), the time savings alone make the case for using drones to conduct bridge inspections.