The existing cross slope of US101 is too steep in several locations, particularly on the west side. In order to address this, the highway cross slope is being reduce and therefore the new curb and sidewalk is being installed higher than existing to accommodate the new highway grade. There is also a 1 inch overlay on US101, which also affects the grades.
In a lot of cases, the existing curb height and sidewalk slopes are non-standard, so when they replaced to standard, it just won’t match at the back of walk. Same with the driveways.
It varies block by block, but the west side of US101 has the biggest issues. The east side will generally match closer, though there will still be some grade differences.
We are not replacing the sidewalk on OR126, so the sidewalk grades will not change.