Cistern directly on construction road - risk of damage?

Hello dear forum members,
the demolition of my building project has now been carried out ( ).
In addition, a construction road was built, which unfortunately ends directly at an (empty) (PE) cistern ( ).

My neighbor and basically co-builder (but with his own house at the back of the entire property) is now afraid that the cistern could be damaged if a 40-ton truck drives all the way up the construction road to the back. The pressure distributes (as explained to me by our site manager) at a 45° angle downward. This would definitely mean that part of the cistern would bear part of the pressure. There is probably about 1 meter of soil between the construction road and the cistern. The cistern is approximately 2x1.5x1 m in size and stands vertically, with its longest side underground.

Is his concern justified? Is it enough, for example, simply to fill the cistern? Or is it better to dig it up and relocate it? Here, I am concerned that the construction road at the back might no longer be stable, even if we refill the hole; we probably won’t be able to compact it well (the neighbor wants to do everything in EL)...
Does anyone of you have experience in civil engineering or can even calculate this? What data would be needed for that?

If the cistern is no longer to be used at that location, then get it out now. If the cistern is still tight and is to be used in the future, I would 1. Inform the site manager 2. Cord off the area +1m with barrier tape 3. Put up a sign, Warning Cistern - Do not place loads. Because during the construction phase everyone constantly delivers something and puts it down in a free spot, and every crane and truck with unloading crane has support legs

1. The cistern could basically stay there. 2. & 3. Sure, we would take care of that (the site manager knows about the cistern and strangely hasn’t said anything yet, but I will ask him directly again). The question now is more whether damage could occur simply because a truck is standing on the construction road (as mentioned, 1m away from the cistern), due to the pressure that would then be transmitted through the soil. So diagonally from above.

The 45 degrees for force dissipation into the ground has proven effective, without knowing the soil structure and compaction, Even professionals can make mistakes, see Cologne subway

That means there is a risk of damage? Or how should I interpret that?

With the warning tape, you determine how much sideways becomes diagonally sideways, and yes, the construction route can subside there.