Trains won’t connect to bridge?

I had the issue in the Fjords but they’re working now. In my case, the red boxes that sit on the rail were sitting too far back. When I connected the track, they would jump to the position they were suppose to be at before connecting the track. I destroyed the track right outside the area of the bridge. Placed a small railway station nearby and connected to the station and that worked. So I removed the station (Parkside Station) and just extended the track where I wanted it to be.