Morning,
Not being critical at all - excellent shots, however there are always limitations with just about every location. Right now, I think that you are bumping up against the location. I would go to google earth/maps and start looking for other similar locations that would have somewhat the same perspective. You can also vary the time of day, where the later it is the darker it gets - while still getting the blue hour, and the billboards will blend into the darkness.
Also, on google earth/maps, take a look at the images pined to the locations to get a sense of what it has to offer. There is also the driving images, that may give you an advanced idea of how a location / perspective may turn out.
You can also just google ideas and then click on "images" to see what may come up. If there are shots that appeal to you, then you can figure out where the shot location may be from the maps - that coupled with the focal length. Sometimes the longer / shorter focal lengths work better. It is just difficult to tell.
LA has a famous shot, however the freeway road bed is sunken, so that on the overpass you get what appears to be some additional height. Wide works there because it pulls in the view right below there. Other locations long works better, where you shoot over the near stuff to get a distant panorama of a longer segment of a raised freeway.
Just some thoughts...