L.A.'s 6th Street viaduct was south of downtown; it crossed over the Los Angeles River and connected with Whittier Blvd. to the east. The bridge was demolished and is currently being rebuilt, on the same alignment as the original. Here are some pictures from today (7-26-20).
1. Facing east from Santa Fe Ave. (west bank)

2. Facing north from the 7th Street Viaduct. The tan building in the distance is Los Angeles MTA HQ, adjacent to LA Union Station.

3. I didn't take a picture of the 7th Street Viaduct other than this plaque, on the east bank side

4. Mission Road (east bank) facing north

5. Mission Road, facing east. I'm not sure where the 'dividing line' between 6th Street and Whittier Blvd. is, maybe over the midpoint of the LA River.
