Historical information
The last swing door train was withdrawn from service in 1973. The third track on this line was commissioned in 1971. The overpass bridge was built at this time. These dates place the photo as pre-1971.
More research needed.
Physical description
A black and white photo taken from street view of a swing door train crossing a roadway with a simple boom gate barrier. The bonnet of a car can be seen at the LHS of the photo.