The state is planning to demolish the Route 36 Highlands Bridge and replace it with a higher span starting next week. The span crosses the Shrewsbury River, where the dolphins have been feeding over the last few weeks.
During the one-day study, the "spotter" will determine whether the dolphins are affected as crews drive piles into the floor of the river.
More work on the bridge is planned to resume about a month after the one-day test.
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Information from: The Star-Ledger, http://www.nj.com/starledger
