Determine if lighting on bridges affects predation on fish, or is an avoidance or attraction issue. Specific ideas for research brought up during the seminar included. Testing juvenile fish ability to pass through slots in baffles, rather than over or around baffles that are often installed in culverts provide passage flows. Optimizing inlet and outlet conditions for passage improved passage into and through culverts. Determining if juvenile salmon can negotiate or pass through any type of standard fish ways, fish passage or fish ladder configuration.
Research is needed to provide alternative measures.
It was thought that a methodology for evaluating demolition options would be useful. A strategy or protocol needs to be developed for use when the ESA listing of a species is imminent or anticipated that involves the highway facility or right of way. This can easily become a corridor level analysis issue. Species such as lynx, wolverine, fisher, amphibians, sage grouse, burrowing owl, ground squirrels, as well as Forest Plan species, may become listed or candidates for listing soon. Developing basic information on suitable habitat for a variety of ESA candidate or listed species is needed.