The Astoria Bridge will be closed to traffic for 45 minutes to an hour Sunday for the Consider the Columbia ceremony. One lane will be kept clear for emergency vehicles only.

While the bridge is closed, northbound traffic will be directed to the parking lot of the Astoria Red Lion Inn, 400 Industry St., and southbound traffic will wait on the bridge itself, on the Washington side. Flaggers from the Oregon and Washington departments of transportation will coordinate the closure, with help from state troopers.

Members of the Missouri Historical Society and the Nez Perce Tribe will pour water from the Mississippi, Missouri, Clearwater and Snake rivers into the Columbia River from the deck of the Shamrock, a local charter boat.

Participants will board buses at the Clatsop County Fairgrounds at 7 a.m. that will ferry them to their viewpoint. The ceremony will start at 8 a.m.

A U.S. Coast Guard helicopter crew will drop flares at locations including Grays Bay, Dismal Nitch, Station Camp, Cape Disappointment, Smith Point and Fort Clatsop. At the end of the ceremony, the Light Ship Columbia will sound its fog horn as a signal to all ships at anchor to sound theirs. The event will conclude with a Coast Guard helicopter fly-over.

Tickets and advance reservations are required. Call 861-4403 for information.

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