During my last visit to Bangor in August 1981 (apart from being hospitalised at Ysbyty Gwynedd in July 1989!) I took an almost identical picture to this. It shows the footbridge and lift towers with things look very similar, see.....
https://www.ontheupfast.com/p/21936chg/30035069793/x36-bangor-station. The platforms to the right of the green fencing have now gone and the university buildings on top of the hill have been rebuilt. The station appeared to be in very good condition and was well used, indeed its passenger numbers have begun to rise again.