Conservation Commission warns MassDOT Route 9 redesign could increase downstream flooding

Sep 16, 2026

Matt Gardner of the Conservation Commission asked the Select Board to press MassDOT for more design work on a Route 9 bridge/interchange project, saying MassDOT's own numbers show an estimated increase in discharge toward Camp Mary Bunker and that a post‑construction monitoring plan is not adequate.

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Matt Gardner, chair of the Conservation Commission, told the Select Board the state Department of Transportation is treating a Route 9 bridge/interchange project as an in‑kind replacement despite design changes that the commission believes will increase downstream runoff.

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