In fact https://www.openstreetmap.org/way/814626878 is not completly a culvert ... https://www.mapillary.com/app/?pKey=338868845553174 from this side and more visible from the other side of the railway bridge : https://www.mapillary.com/app/?pKey=905861627563283 

We have data near the pin and for the west part but nothing for the east part

Will do additional research and survey before changing this part. 