Just to clarify one change here: The segment of Pasque SB on the west side being marked as pedestrian inaccessible is less "I know it's not legal for you to walk there" and more that it's completely impractical to do so (and also it might actually be illegal if i'm reading SGI's website right.)

There's no shoulder on that particular segment since it's for turning/intersection. So a pedestrian would have to cross the merging lane and walk to the shoulder to start walking down Pasqua. Since there's no shoulder on that segment, no pedestrian access, QED.