Looking at the Google street view shows a culvert under the tracks and also under the road at that location. Flooding probably created its own route. https://goo.gl/maps/VdjRz5jSV1hEZJqUA
Track work machinery was heading south out of Clinton yesterday morning along Pearl Street. I only got a glimpse but it might have been a plate installer/remover. I didn't have time to check but am wondering if they were working in Clinton or Berlin.
Train made the return from Leominster early this morning--at the Sterling St (route 62) crossing around 1:50AM. That schedule is much later than I remember it.