Here is the thing about fish and people ..... people are not compatable in the natural enviroment with the urban areas and harvest the most destructive. To try and undo all the things that harm fish and wildlife humans have done is not possible. That the culverts replacement is helpfull is correct but to what degree and are the results measureable is something else all together. Without changes that allow for a larger escapement the additional habitat only increases the survival to some unmeasureable degree. It is a feel good thing that in the end will fail because we lack the will to do the things such as urban growth management, harvest reform, proper rural timberland management. So we throw money at things that are politically acceptable but do not stop the downward trend.