I'm jealous. If my country built a tunnel like that, it would be for cars only (preferably old polluting diesel, with fuel subsidies), so that "normal people" can use it. With an added whiff of coal power plant smoke.
There is crazy entitlement of cars to the detriment of everything else. It's like privilidge/something-ism.
In Uk there is a particular crossing where cars were frqeuently hitting pedestris on the pavement, and traffic authority decided againt putting up bollards becauae cars might get damaged.
So its more important to keep a car undamaged than to keep people/children safe.
We've had people cut up bollards with an angle grinder. Bollards in the shape of a large planter was soaked in petrol and burned to the ground
Nobody cares, noone is charged and this does not even make the news.
Sounds a lot like Central or Eastern Europe. I'm optimistic and believe that in about 10 to 15 years you will have caught up with Western European pedestrian and cycle infrastructure. You might even surpass them due to first-mover disadvantage.
Oh well. Growing civilized takes time.