Are you talking about El Camino Real? There are two areas of construction happening: One at Page Mill and one in the San Antonio area. Most of the lane-blocks are happening only between rush hours, so it's easy to miss, but I'm guessing that it's someone at Waymo has put full-time blocks in those areas.

camino and san antonio is exactly the problem. my house and office are both off san antonio so it sends me 29 minutes out of the way.