Elevator on both side. 
Steps have ramps on right and left. 
This way : https://www.openstreetmap.org/way/1147286106 must be on south not north. Each side has this configuration (down to up) : big stairs , small plateform making an 90 angle, small steps , small plateform making an 90 angle,and big steps going to the the bridge near the elevator. 

Here is some pictures : https://pasloin.github.io/CC0-Pictures-OSM/Salangaanbrug.html 