The state Department of Transportation this week said it would pursue “vegetated river protrusions” as part of mitigation for the Haines Highway improvement project, an apparent response to concerns that two miles of planned rock embankments would degrade roadside fish habitat between 3 Mile and 25 Mile.

DOT spokesman Jeremy Woodrow said the revised plan grew out of recent discussions with transportation and tribal officials in Klukwan, where an “engineered log jam” has been…