Redondo Flyover (Los Angeles Railfanning Tour)
https://railfanjunction.carrd.co/
The bridges over the LA river in Commerce are a great place to go railfanning, and while waiting for Santa Fe 3751 to show up (seen at the end of the video) I caught a number of trains on both the UP Los Angeles Subdivision bridge and the Redondo Flyover with downtown Los Angeles being seen in the background!