I have suggested (here) that one solution to current and forecast overcrowding at Lincoln High School would be to shift Skyline Elementary (K-8) from feeding into Lincoln to feeding into Roosevelt High School. One counter argument from the Skyline community is that in the case of an earthquake during school hours that wipes out all the bridges in Portland, there would be no way for students to get home or to be rejoined with their families.
(1) This would indeed be bad for those students and their families, and trying to avoid such a situation would be desirable.
(3) To my current knowledge, the City of Portland does not have a specific backup plan to get people across the river given such a disaster. They will react to each disaster situation as it occurs so something would be done.
(4) Lots and lots of families could be separated from each other and/or their homes if all the bridges are wiped out during school hours. For examples, many people work downtown on the westside while their homes and the schools of their children are on the eastside. The Skyline students and their families would not be alone.
(5) PPS does have the following family reunification plan:
My understanding is that PPS staff (teachers, assuming they are able) will stay with students until they are picked up by their parents. Of course, most PPS staff will have their own families to worry about and reunite with as well.