According to my Kinderdijk Tip Off The Beaten Path see here the narrow road to watch the Kinderdijk windmills in a very close distance, and still for free.
The people who live here, also use the narrow road.
So please, take care and do drive in a modest way and not too fast.
We talked to some local people and had a very nice little chat. They appreciate your politeness for sure and, let's hope these road will stay open for tourists.
In summertime, the weekends get realy crowdy. For tose who are not wanting to be walking along the windmills in masses, do come in the off season and enjoy the views all by yourself. Okay, it might rain or be windy, but with some wind the pleasure will be all yours, as the windmills will be turning.