Cedar Crossing Bridge | |
---|---|
Cedar Crossing Covered Bridge in 2016 | |
Coordinates | 45°28′19.3″N122°31′25.4″W / 45.472028°N 122.523722°W Coordinates: 45°28′19.3″N122°31′25.4″W / 45.472028°N 122.523722°W [1] |
Carries | Deardorff Road |
Crosses | Johnson Creek |
Locale | Multnomah County, Oregon, United States |
Maintained by | Portland Bureau of Transportation |
Characteristics | |
Design | Deck girder |
Total length | 60 feet (18 m) |
Width | 29 feet (8.8 m) |
History | |
Opened | 1982 |
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]
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 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.
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]
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.
The Steel Bridge is a through truss, double-deck vertical-lift bridge across the Willamette River in Portland, Oregon, United States, opened in 1912. Its lower deck carries railroad and bicycle/pedestrian traffic, while the upper deck carries road traffic, and light rail (MAX), making the bridge one of the most multimodal in the world. It is the only double-deck bridge with independent lifts in the world and the second oldest vertical-lift bridge in North America, after the nearby Hawthorne Bridge. The bridge links the Rose Quarter and Lloyd District in the east to Old Town Chinatown neighborhood in the west.
Multnomah Falls is a waterfall located in the Columbia River Gorge, east of Troutdale, between Corbett and Dodson, Oregon, United States. The waterfall is accessible from the Historic Columbia River Highway and Interstate 84. Spanning two tiers on basalt cliffs, it is the tallest waterfall in the state of Oregon at 620 ft (189 m) in height.
The Historic Columbia River Highway is an approximately 75-mile-long (121 km) scenic highway in the U.S. state of Oregon between Troutdale and The Dalles, built through the Columbia River Gorge between 1913 and 1922. As the first planned scenic roadway in the United States, it has been recognized in numerous ways, including a listing on the National Register of Historic Places as a National Historic Landmark, designation as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers, and considered a "destination unto itself" as an All-American Road by the U.S. Secretary of Transportation. The historic roadway was bypassed by the present Columbia River Highway No. 2 from the 1930s to the 1950s, leaving behind the old two-lane road. The road is now mostly owned and maintained by the state through the Oregon Department of Transportation as the Historic Columbia River Highway No. 100 or the Oregon Parks and Recreation Department as the Historic Columbia River Highway State Trail.
The Hawthorne Bridge is a truss bridge with a vertical lift that spans the Willamette River in Portland, Oregon, joining Hawthorne Boulevard and Madison Street. It is the oldest vertical-lift bridge in operation in the United States and the oldest highway bridge in Portland. It is also the busiest bicycle and transit bridge in Oregon, with over 8,000 cyclists and 800 TriMet buses daily. It was added to the National Register of Historic Places in November 2012.
The Morrison Bridge is a bascule bridge that spans the Willamette River in Portland, Oregon. Completed in 1958, it is the third bridge at approximately the same site to carry that name. It is one of the most heavily used bridges in Portland. It was added to the National Register of Historic Places in November 2012.
The Marquam Bridge is a double-deck, steel-truss cantilever bridge that carries Interstate 5 traffic across the Willamette River south of downtown Portland, Oregon. It is the busiest bridge in Oregon, carrying 140,500 vehicles a day as of 2016. The upper deck carries northbound traffic; the lower deck carries southbound traffic.
The Broadway Bridge is a Rall-type bascule bridge spanning the Willamette River in Portland, Oregon, United States, built in 1913. It was Portland's first bascule bridge, and it continues to hold the distinction of being the longest span of its bascule design type in the world. It was added to the National Register of Historic Places in November 2012.
The Ross Island Bridge is a cantilever truss bridge that spans the Willamette River in Portland, Oregon. It carries U.S. Route 26 across the river between southwest and southeast Portland. The bridge opened in 1926 and was designed by Gustav Lindenthal and honors Oregon pioneer Sherry Ross. It is named for its proximity to Ross Island. Although it looks like a deck arch bridge, it is a cantilever deck truss bridge, a rare type in Oregon.
The Interstate Bridge is a pair of nearly identical steel vertical-lift, "Parker type" through-truss bridges that carry Interstate 5 traffic over the Columbia River between Vancouver, Washington and Portland, Oregon in the United States.
The Sellwood Bridge is a deck arch bridge that spans the Willamette River in Portland, Oregon, in the United States. The current bridge opened in 2016 and replaced a 1925 span that had carried the same name. The original bridge was Portland's first fixed-span bridge and, being the only river crossing for miles in each direction, the busiest two-lane bridge in Oregon. The Sellwood Bridge links the Sellwood and Westmoreland neighborhoods of Portland on the east side with Oregon Route 43/Macadam Avenue on the west side. At its east end it leads to Tacoma Street. The bridge is owned and operated by Multnomah County. The original span of 1925 was a steel truss bridge, while its 2016 replacement is a deck-arch-type bridge.
Forest Park is a public municipal park in the Tualatin Mountains west of downtown Portland, Oregon, United States. Stretching for more than 8 miles (13 km) on hillsides overlooking the Willamette River, it is one of the country's largest urban forest reserves. The park, a major component of a regional system of parks and trails, covers more than 5,100 acres (2,064 ha) of mostly second-growth forest with a few patches of old growth. About 70 miles (110 km) of recreational trails, including the Wildwood Trail segment of the city's 40-Mile Loop system, crisscross the park.
The Sunset Transit Center is a TriMet bus transit center and light rail station on the MAX Blue and Red lines in Washington County, Oregon. It opened for MAX in 1998 and is the 5th stop westbound on the Westside MAX. This is the first stop after the Robertson Tunnel under Portland's West Hills. Sunset TC is the second-busiest station on the Westside MAX line, with a weekday average of almost 6,000 daily riders in 2012. Though the station has a Portland address, it primarily serves residents of the communities of Cedar Hills, Cedar Mill, and Beaverton.
Johnson Creek is a 25-mile (40 km) tributary of the Willamette River in the Portland metropolitan area of the U.S. state of Oregon. Part of the drainage basin of the Columbia River, its catchment consists of 54 square miles (140 km2) of mostly urban land occupied by about 180,000 people as of 2012. Passing through the cities of Gresham, Portland, and Milwaukie, the creek flows generally west from the foothills of the Cascade Range through sediments deposited by glacial floods on a substrate of basalt. Though polluted, it is free-flowing along its main stem and provides habitat for salmon and other migrating fish.
The Sauvie Island Bridge crosses the Multnomah Channel of the Willamette River near Portland, Oregon, United States. The original Parker truss bridge, built in 1950 with a 200-foot (61 m) main span, was replaced with a tied arch bridge with a 360-foot (110 m) span in 2008 due to cracks discovered in 2001.
Cornelius Pass Road is an arterial road over Cornelius Pass in the Tualatin Mountains west of Portland, Oregon, United States, also extending several miles to the south. Running north–south, the road stretches between U.S. Route 30 on the north and Blanton Street, just south of Oregon Route 8, on the south. The road passes through Washington and Multnomah counties, crossing the Tualatin Mountains at Cornelius Pass, 581 feet (177 m) above sea level. TriMet's MAX Light Rail line travels over the road on a bridge.
The Van Buren Street Bridge is a swing span, steel motor vehicle bridge spanning the Willamette River at Corvallis in the U.S. state of Oregon. Opened in 1913, the black colored bridge was the first bridge across the river at Corvallis and is now the third oldest bridge across the river. Owned by the state and maintained by the Oregon Department of Transportation (ODOT), the 708-foot (216 m) long span is of a through truss design and carries one lane of traffic of Oregon Route 34 eastbound from Corvallis into neighboring Linn County. The bridge no longer is able to swing open.
The Deadwood Creek Bridge is a covered bridge in western Lane County in the U.S. state of Oregon. Built in 1932, the 105-foot (32 m) Howe truss structure carries Deadwood Loop Road over Deadwood Creek. The crossing lies upstream of the rural community of Deadwood in the Siuslaw National Forest of the Central Oregon Coast Range. The bridge was added to the National Register of Historic Places in 1979.
Myrtle Creek is a short tributary of the South Umpqua River in Douglas County in the U.S. state of Oregon. Its main stem, formed by the confluence of two forks just south of the city of Myrtle Creek, is only about 1 mile (1.6 km) long. Its only named tributaries are the two forks, North Myrtle Creek and South Myrtle Creek, each of which is much longer than the main stem.
Pass Creek Bridge is a covered bridge in the city of Drain in Douglas County in the U.S. state of Oregon. It originally carried stagecoaches over Pass Creek before being moved a few hundred feet from its original location in 1987 and reassembled behind the Drain Civic Center. From then through 2014, when the city closed the deteriorating bridge completely, it carried pedestrian traffic. Pass Creek is a tributary of Elk Creek in the Umpqua River basin.
The Madison Street Bridge, or Madison Bridge, refers to two different bridges that spanned the Willamette River in Portland, Oregon, from 1891 to 1900 and from 1900 to 1909. The bridges connected Madison Street, on the river's west bank, and Hawthorne Avenue, on the east bank, on approximately the same alignment as the existing Hawthorne Bridge. The original and later bridges are sometimes referred to as Madison Street Bridge No. 1 and Madison Street Bridge No. 2, respectively. The second bridge, built in 1900, has alternatively been referred to as the "rebuilt" Madison Street Bridge, rather than as a new bridge, because it was rebuilt on the same piers. Both were swing bridges, whereas their successor, the Hawthorne Bridge, is a vertical-lift-type.