Minor bridge modifications could help young steelhead escape from Hood Canal – PSI


As this blog has reported for many years, the Hood Canal Floating bridge is a barrier likely the primary issue responsible for the massive decline in salmon in the Canal. An unintended consequence of our putting a floating bridge in rather than one that would be a suspension bridge. Chris Dunagan brings us up to speed on the latest work by engineers to address this mistake.


Help could be on the way for migrating steelhead and salmon in Hood Canal, where many young fish are killed each year by seals and other predators that lie in wait at the Hood Canal floating bridge. As many as 50 percent of the steelhead migrants perish as they arrive at the bridge, where predators pick them off one by one. The bridge is supported by floating concrete pontoons, forming a nearly solid barrier across the waterway. Young steelhead generally swim near the surface, making them especially vulnerable to predation, although some fish will dive under the bridge to get to the other side. Engineers are currently designing minor modifications to a few bridge pontoons to help the fish find their way through existing gaps in the structure. Chris Dunagan reports. (Puget Sound Institute)

Minor bridge modifications could help young steelhead escape from Hood Canal

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