Well and good. I worked the survey parties that went into the field to verify that the job was completed according to the contract engineering plans and drawings. I also worked in the engineering office where the necessary work orders were drawn up and forwarded to the other sections for actions. What they're doing now, I don't know, but I watched how it worked when I worked there.
As Dirty Harry said "Are ya' feelin' lucky, P____?" My suggestion. Know your height by measuring it. If you have any question, go another way or hang on the ladder with a phone and look close while someone creeps under the bridge.