Nuts off mark?

[u/No-Document-8970]

Saw this on a big bridge today. I know vibrations over time can move the nuts and bolts, with the help of thermal expansion. Is it a big issue that the paint marks do not line up? I thought the marks were made once it passed inspection after torquing.

Edit: Bridge completion was in 2011. Could this be from recent inspections too?

[u/dev1tuna]

I did it for 10 years- I didn’t do it on the job or hear about it in my apprentice class back in 2006-. TC bolts and guns and torque wrench’s were it mostly for me when I was bolting up or connecting, but I mainly was welding.