Whaa... of course Frankston has an overpass. Fletcher road. There was an LX closed in the late 70's or early 80's(?) at beach st. and the overpass was built much more recently to replace this loss of access for vehicles.
Oakleigh is correct. Here's a view taken from the overpass the same day, showing Oakleigh A box. The quiz photo was taken from the other side of the railway, looking between one of the piers for the footbridge and the roadway. Photo taken 5 Sep 1968.