With local authorities all on board, I-5 bridge replacement heads into federal review

The project team received final approval from local governments and agencies to move the preliminary design into the next phase of development.

PORTLAND, Ore. — The Interstate Bridge Replacement project is heading into the federal environmental review process, marking the start of a two-year period that will see the project go from a conceptual plan to a more concrete design for the new bridge.

The project team unveiled its proposed “Modified Locally Preferred Alternative” in May, a preliminary configuration recommendation that included a fixed crossing with no drawbridge, three main lanes and two auxiliary lanes in each direction, a scaled-down Hayden Island interchange and a light

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