An extremely low-cost way to build a VTUSA annex and high-level platform at Los Angeles Union Station.
Yellow is the outline of a station building (Virgin Trains waiting lounge, ticketing areas, etc) and Orange is the outline of a high-level platform.
The track is Number 15, which has no platform currently and is used for 'storage.' VTUSA could build a different storage track outside of the station area to replace the utility this length of track.
The platform would go right on top of what is currently an access road. It does not look like a very busy road, so I have shown the platform as sloped to allow service vehicles to drive up onto the platform as necessary. I imagine that with the station building being right next to the platform there would always be an attendant of some kind present to direct traffic when a service vehicle needs to traverse the platform.