Error on the map

I am new and I dont know how to correct this. At 50 53’29.49" N, 4 15 14.84 E. The railwayline (Asse Brussels) is shown underneath the road N9. The railwayline however crosses the road with a bridge. The same error is shown in google maps. This is shown correctly on google earth.

Hello, welcome to the forum.

You can just Report an error in the map and hopefully a mapper from this region will take care or you can start with the Beginners Guide and become an OSM mapper and later edit the map yourself.