A closed ramp near the Fremont Street exit from I-80 in San Francisco. I suspect this was once functioning as part of the Transbay terminal and Embarcadero Freeway, both of which have been demolished. I would consider this ramp a Thomasson, except that I think it might be used by construction vehicles.
This was taken with the Hipstamatic app on the iPhone during a midday walk. I still try to make time during my busy workday for such walks when I can.