Essentially we are near the spot where three freeways merge. This section replaced the double deck freeway that collapsed during the huge 1989 earthquake. After the earthquake, support pier retrofitting went on around the bay. A new round is going on now in many parts of Oakland. These really are massive structures. I used to think of them as temporary shade; since the earthquake I think of them as lethal and hope the new engineering protects us from anymore collapses.