The U.S. Environmental Protection Agency has released a 13-page report detailing objections to a new bridge over the Columbia River in Portland, Ore. The agency says transportation planners failed to adequately account for issues of urban sprawl; increased noise and air pollution; and the release of toxic sediments during construction that could harm migrating salmon. Though the EPA's objections, on their own, are not enough to halt the I-5 bridge project, they could provide ammunition to local environmental groups that are adamantly opposed to the plan.

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