Cedar Crossing Bridge

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Cedar Crossing Bridge
Cedar Crossing Bridge.jpg
Cedar Crossing Covered Bridge in 2016
Coordinates 45°28′19.3″N122°31′25.4″W / 45.472028°N 122.523722°W / 45.472028; -122.523722 Coordinates: 45°28′19.3″N122°31′25.4″W / 45.472028°N 122.523722°W / 45.472028; -122.523722 [1]
CarriesDeardorff Road
Crosses Johnson Creek
Locale Multnomah County, Oregon, United States
Maintained by Portland Bureau of Transportation
Characteristics
DesignDeck girder
Total length60 feet (18 m)
Width29 feet (8.8 m)
History
Opened1982

Cedar Crossing Bridge is a covered bridge in southeast Portland in the U.S. state of Oregon. [1] Built in 1982, it carries Deardorff Road over Johnson Creek. [2] The Oregon Department of Transportation notes that the bridge, even though it is covered, is "not a true covered bridge" because it does not use a timber truss for support. [1]

Covered bridge wooden bridge with protective cover

A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last 100 years.

Portland, Oregon City in Oregon, United States

Portland is the largest and most populous city in the U.S. state of Oregon and the seat of Multnomah County. It is a major port in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia rivers. As of 2018, Portland had an estimated population of 653,115, making it the 25th most populated city in the United States, and the second-most populous in the Pacific Northwest. Approximately 2.4 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous MSA in the United States. Its Combined Statistical Area (CSA) ranks 19th-largest with a population of around 3.2 million. Approximately 60% of Oregon's population resides within the Portland metropolitan area.

U.S. state constituent political entity of the United States

In the United States, a state is a constituent political entity, of which there are currently 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory and shares its sovereignty with the federal government. Due to this shared sovereignty, Americans are citizens both of the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons restricted by certain types of court orders. Four states use the term commonwealth rather than state in their full official names.

Cedar Crossing Bridge is the only covered bridge in Multnomah County. [2] It replaced an older wooden truss bridge that had fallen into disrepair. [1] Notable features of the 1982 bridge include five large windows on each side, an interior finished with knotty pine, a 24-foot (7.3 m) roadway, and a separate 5-foot (1.5 m) walkway for foot traffic. [1]

Truss bridge bridge whose load-bearing superstructure is composed of a truss

A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements usually forming triangular units. The connected elements may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently.

In 2015, an article in The Oregonian newspaper reported problems on or near the bridge in the form of graffiti, trash, a surface walkway with mud and standing water, and apparent bullet holes. [2] However, the Portland Bureau of Transportation found the bridge deck to be in satisfactory condition and the overall structure to be in fair or good condition in 2014. The bridge abutments, constructed in 1936 for an earlier bridge, were said to be in fair condition. [2]

The Portland Bureau of Transportation is the agency tasked with maintaining the city of Portland's transportation infrastructure. Bureau staff plan, build, manage and maintain a transportation system with the goal of providing people and businesses access and mobility. The bureau's total FY 2016-17 Adopted Budget is $376.0 million. Of that amount, the Capital Improvement Plan for FY 2016-17 totals $91.1 million During FY 2014–15, the Bureau employed 749 staff members. The managed assets totaled $8.4 billion in public assets from streets and bridges to traffic signals and street lights at the time Asset Status and Condition Report 2013 was published The Bureau also owns the Portland Streetcar and the Portland Aerial Tram, though they’re operated by Portland Streetcar Inc. and Oregon Health & Science University respectively.

See also

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References

  1. 1 2 3 4 5 "Johnson Creek (Cedar Crossing) Covered Bridge" (PDF). Oregon Department of Transportation. Retrieved March 22, 2016.
  2. 1 2 3 4 Theen, Andrew (March 26, 2015). "Troubleshooter: Multnomah County's Only Covered Bridge in Need of Attention". The Oregonian. Retrieved April 3, 2016 via OregonLive.