Английская Википедия:Astoria–Megler Bridge

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The Astoria–Megler Bridge is a steel cantilever through-truss bridge in the Pacific Northwest region of the United States that spans the lower Columbia River. It carries a section of U.S. Route 101 from Astoria, Oregon, to Point Ellice near Megler, Washington. Opened in 1966, it is the longest continuous truss bridge in North America.

The bridge is Шаблон:Convert from the mouth of the river at the Pacific Ocean. The bridge is Шаблон:Convert in length, and was the final segment of U.S. Route 101 to be completed between Olympia, Washington, and Los Angeles, California.

History

Файл:Tourist No. 2 Astoria-Megler ferry.jpg

Tourist No. 2, a ferry built in 1924, replaced by Tourist III in 1931

Ferry service between Astoria and the Washington side of the Columbia River began in 1926. The Oregon Department of Transportation purchased the ferry service in 1946. This ferry service did not operate during inclement weather and the half-hour travel time caused delays. In order to allow faster and more reliable crossings near the mouth of the river, a bridge was planned. The bridge was built jointly by the Oregon Department of Transportation and Washington State Department of Transportation. Following construction, the Oregon Department of Transportation became the lead agency responsible for maintenance and operating the structure.

Construction on the structure began on November 5, 1962, and the concrete piers were cast at Tongue Point, Шаблон:Convert upriver. The steel structure was built in segments at Vancouver, Washington, Шаблон:Convert upriver, then barged downstream where hydraulic jacks lifted them into place. The bridge opened to traffic on July 29, 1966, marking the completion of U.S. Route 101 and becoming the seventh major bridge built by Oregon in the 1950s–1960s; ferry service ended the night before. On August 27, 1966, Governors Mark Hatfield of Oregon and Dan Evans of Washington dedicated the bridge by cutting a ceremonial ribbon. The four-day ceremony was celebrated by 30,000 attendees who participated in parades, drives, and a marathon boat race from Portland to Astoria. The cost of the project was $24 million, equivalent to $Шаблон:Inflation million in Шаблон:Inflation-year dollars, and was paid for by tolls that were removed on December 24, 1993, more than two years early.

Details

Файл:USACE Astoria-Megler Bridge.jpg

Looking west over Astoria in 1986

The bridge is Шаблон:Convert in length and carries one lane of traffic in each direction. The cantilever-span section, which is closest to the Oregon side, is Шаблон:Convert long, and its main (central) span measures Шаблон:Convert. It was built to withstand Шаблон:Convert wind gusts and river water speeds of Шаблон:Convert. As of 2004, an average of 7,100 vehicles per day used the Astoria–Megler Bridge. Designed by William Adair Bugge Шаблон:Nowrap construction of the cantilever truss bridge was completed by the DeLong Corporation, the American Bridge Company, and Pomeroy Gerwick.

The south end has the former toll plaza, at the end of a Шаблон:ConvertШаблон:Cn inclined ramp which forms a spiral bridge, going through a full 360-degree loop while gaining elevation over land to provide almost Шаблон:Convert of clearance over the shipping channel (similarly to the Lincoln Tunnel Helix in Weehawken, New Jersey). The north end is an at-grade intersection with State Route 401. Since most of the northern portion of the bridge is over shallow, non-navigable water, it is low to the water.

Repainting the bridge was planned for May 2009 through 2011 and budgeted at $20 million, to be shared by the states of Oregon and Washington. A four-year planned paint stripping and repainting project was planned for March 2012 through December 2016.Шаблон:Needs update inline

In 2016, a colony of double-crested cormorants moved from nearby East Sand Island to the bridge, where they began nesting. Their presence caused issues with bridge inspections, as bird droppings and guano covered visual cracks, and nests obscured navigational lights used by ship traffic. The population of cormorants increased to 5,000 breeding pairs in 2020, prompting efforts by the Army Corps of Engineers to scare the birds from the bridge and relocate them back to East Sand Island.

Pedestrians

Normally, only motor vehicles and bicycles are allowed on the bridge—not pedestrians. There is no sidewalk and the shoulders are too narrow for pedestrians adjacent to Шаблон:Convert traffic. However, one day a year—usually in October—the bridge is host to the Great Columbia Crossing. Participants are taken by shuttle to the Washington side, from where they run or walk to the Oregon side on a Шаблон:Convert route across the bridge. Motor traffic is allowed to use only one lane (of two lanes) and is advised to expect delays during the two-hour event. For the first time, during the 2018 event, the Oregon Department of Transportation announced that the bridge would be closed to motor traffic.

Popular culture

The bridge itself is featured prominently in the movies Short Circuit, Kindergarten Cop, Free Willy 2: The Adventure Home and The Goonies. It stands in for the doomed fictional Madison Bridge in Irwin Allen's 1979 made-for-TV disaster movie The Night the Bridge Fell Down. Songwriter Sufjan Stevens most likely references the bridge in his song "Should Have Known Better" off his 2015 album Carrie & Lowell as a metaphor for dealing with his grief from the death of his mother.

Images

• View of the bridge from Astoria neighborhood.

  View of the bridge from Astoria neighborhood.

• On the bridge, heading north.

  On the bridge, heading north.

• On the bridge, heading north.

  On the bridge, heading north.

• Astoria Bridge. Close up view of the through-truss section of the bridge.

  Astoria Bridge. Close up view of the through-truss section of the bridge.

• A close up view of the through-truss section of the bridge.

  A close up view of the through-truss section of the bridge.

• A view of the flat, continuous truss section of the bridge.

  A view of the flat, continuous truss section of the bridge.

• A workman's view from high on the bridge.

  A workman's view from high on the bridge.

• Washington end of the bridge.

  Washington end of the bridge.

• A view of the bridge from the Astoria Column.

  A view of the bridge from the Astoria Column.

• A cargo ship passing under the bridge.

  A cargo ship passing under the bridge.

• Looking up from beneath the bridge.

  Looking up from beneath the bridge.

• Multiple cargo ships with the bridge in the background.

  Multiple cargo ships with the bridge in the background.

See also

• Шаблон:Portal-inline
• Шаблон:Portal-inline
• Шаблон:Portal-inline
• Шаблон:Portal-inline
• List of bridges documented by the Historic American Engineering Record in Oregon
• List of bridges documented by the Historic American Engineering Record in Washington (state)
• List of bridges on U.S. Route 101 in Oregon

External links

• Шаблон:HAER
• funbeach.com: Astoria–Megler Bridge
• oldoregon.com: Astoria–Megler Bridge
• Great Columbia Crossing