Since always.
I would posit that the loader was parked there intelligently, for the strategic purpose of blocking traffic. I can see how they might have been concerned with people driving through the cones to turn right at the corner by exploiting what would they would unwisely see as you did, an empty lane. Or, drivers pulling out of the drive entrance where you were standing to take the picture, might be tempted to turn onto the right-most lane to avoid trying to merge with a blocked left lane.
All this of course presupposes that they really, really didn't want people driving on those lanes.
But of course you could be right, and they blocked lanes unnecessarily since I'm sure they never give it any thought.
Or, you might just have issues with authority as evidenced by your refusal to pay your traffic tickets and ensuing suggestion to skip paying your license renewal, and your threads on fighting and questioning the system at every corner. In that case, I would like to speak on behalf of all seven billion other people on the planet and apologise for inconveniencing your life for the sake of the rest of us with our petty laws, rules, and procedures that don't put you on a pedestal. Sorry.
Oof, did someone hit a nerve?
It's possible that they didn't park just around the corner because trucks were unable to turn if they parked too close and they would have to walk to far if they parked in the middle of the block.
I've seen other places where construction projects seemingly blocked a lane for an extra two months, so that the people would have somewhere to park for free.