Amazing motel postcard pics. I realize that I drive by some of those all the time.
I thought I'd do a then and now. Or rather, a then, then and now.
Santa Ana/San Bernardino Fwy merge east of downtown LA, circa 1950-1951 (?). Notice the PE tracks and tunnel. I believe the PE stopped running here in 1950. Or was it '51? Hmm.

USC Archive
Santa Ana/San Bernardino Fwy merge east of downtown LA, circa 1955. What I found odd was the long overpass, because I don't remember it ever existing...

USC Archive
Santa Ana/San Bernardino Fwy merge east of downtown LA, December 11, 2010. See, no overpass. I can't think of where it went from/to. Might anyone know? And might anyone know when it was knocked down, and why? Also in this pic, I see a few of the old lamp posts still exist.

Photo by me