This document discusses the intersection of transportation infrastructure and fish passage in the Penobscot River watershed. Historically, anadromous fish populations were abundant but have declined due to barriers blocking migration routes. Stream connectivity is important for fish and ecosystem health. The Penobscot River Restoration Project has improved fish passage. Proper design of culverts and bridges can avoid blocking streams. Maintaining connectivity provides environmental, social, and economic benefits like improved fishing. The document recommends proactively addressing passage issues and considering management options to balance priorities like species, safety, and flooding when deciding on solutions.