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REDDING, Calif. (AP) - Officials have turned down the lights on a Northern California bridge over concerns they may be contributing to a decline in Chinook salmon.

The Record Searchlight of Redding reported on Thursday that the lights on Redding's Sundial Bridge are less than half as intense now as they used to be. The change comes amid concerns from the state Department of Fish and Wildlife about the effects of intense levels of artificial light on Chinook salmon.

State Fish and Wildlife scientist Andrew Jensen says such lights slow or stop the salmons' juvenile migration, making them easy prey. He says lighting on the Sundial Bridge may need to go down even more.

The bridge straddles the Sacramento River and serves as a pedestrian walkway and bike path.

Redding City Manager Kurt Starman says further studies of the lights' effects on the fish were needed.

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