Matching this map with the nice picture in Post #8 above, it looks like the ramp connecting 80 westbound to 880 southbound collapsed onto the ramp connecting 80 eastbound to 580 westbound.Wrong.This is relatively good news.
The bottom ramp, 80 east to 580 west, should be able to be reopened fairly soon,...
Looking again at the close up Google map The Maze, it seems obvious that the top ramp, the one that will take months to rebuild, is the one for traffic coming on Interstate 80 East over the Bay Bridge (from San Francisco) and going to Interstate 580 East (to most of the East Bay.)
The petro trucks from the Richmond refineries to the north, traveling on Interstate 880 south to most of the Bay Area, should have their section back as soon as they clear the collapsed overpass rubble.
But the evening commute out of San Francisco is going to suck big time for months, in all directions.
Oh my, all the carbon emissions in those jams. Glad I’m not a delivery driver anymore. The good news is that Berkeley residents will probably be ‘hardest hit.’