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Wind-Tolerant, Autonomous Drones Could Cut Bridge Inspection Costs by 30%
(researchinenglish.com)
This is a most excellent place for technology news and articles.
Not just travel time, but also climbing around on the bridge itself.
at the very least they would identify all the parts that need to be looked at in person.
The amount of time it takes a body to hand inspect every inch should be the lions share of the time. if it's not, you need a new bridge :)