The Willamette River is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
Multnomah Falls is a waterfall located on Multnomah Creek 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 Multnomah Creek Bridge, built in 1914, crosses below the falls, and is listed on the National Register of Historic Places.
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 being listed on the National Register of Historic Places, being designated as a National Historic Landmark by the U.S. Secretary of the Interior, being designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers, and being 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 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 Yaquina Bay Bridge is an arch bridge that spans Yaquina Bay south of Newport, Oregon. It is one of the most recognizable of the U.S. Route 101 bridges designed by Conde McCullough and one of eleven major bridges on the Oregon Coast Highway designed by him. It superseded the last ferry crossing on the highway.
The Royal Gorge Bridge is a tourist attraction near Cañon City, Colorado within Royal Gorge Bridge and Park, a 360-acre (150 ha) amusement park located along the edge of the Royal Gorge around both ends of the bridge. The bridge crosses the gorge 955 feet (291 m) above the Arkansas River and held the record of highest bridge in the world from 1929 until 2001 when it was surpassed by the Duge Bridge in China. The Royal Gorge Bridge maintained the title of the world's highest suspension bridge until the Beipan River Guanxing Highway Bridge was completed in 2003, also in China. The bridge remains the highest bridge in the United States and was among the ten highest bridges in the world until 2012.
The Sam Hill Memorial Bridge, also known as the Biggs Rapids Bridge, is a steel truss bridge in the northwest United States that carries U.S. Route 97 (US 97) across the Columbia River between Biggs Junction in Sherman County, Oregon, and Maryhill in Klickitat County, Washington. It was named in honor of the early bridge proponent Sam Hill, the builder of the nearby Maryhill Museum of Art.
U.S. Route 101 (US 101), is a major north–south U.S. Highway in Oregon that runs through the state along the western Oregon coastline near the Pacific Ocean. It runs from the California border, south of Brookings, to the Washington state line on the Columbia River, between Astoria, Oregon, and Megler, Washington.
Bixby Bridge, also known as Bixby Creek Bridge, on the Big Sur coast of California, is one of the most photographed bridges in California due to its aesthetic design, "graceful architecture and magnificent setting". It is a reinforced concrete open-spandrel arch bridge. The bridge is 120 miles (190 km) south of San Francisco and 13 miles (21 km) south of Carmel in Monterey County on State Route 1.
Cape Creek Bridge is an arch bridge that spans Cape Creek in Lane County, Oregon, United States. The bridge carries U.S. Route 101. Opened in 1932, it was designed by noted bridge engineer Conde McCullough and built of reinforced concrete by John K. Holt. The total length of the bridge is 619 feet (189 m), with a main span of 220 feet (67 m). The bridge resembles a Roman aqueduct, with a single parabolic arch that spans half its length. It was listed as Cape Creek Bridge No. 01113 on the National Register of Historic Places in 2005, as part of the C. B. McCullough Major Oregon Coast Highway Bridges MPS.
The Quincy Rail Bridge is a truss bridge that carries a rail line across the Mississippi River between West Quincy, Missouri, and Quincy, Illinois, USA. It was originally constructed in 1868 for the Chicago, Burlington and Quincy Railroad, a predecessor of BNSF Railway.
Interstate 5 (I-5) in the U.S. state of Oregon is a major Interstate Highway that traverses the state from north to south. It travels to the west of the Cascade Mountains, connecting Portland to Salem, Eugene, Medford, and other major cities in the Willamette Valley and across the northern Siskiyou Mountains. The highway runs 308 miles (496 km) from the California state line near Ashland to the Washington state line in northern Portland, forming the central part of Interstate 5's route between Mexico and Canada.
The Rex T. Barber Veterans Memorial Bridge is a concrete arch bridge in the western United States; it spans the Crooked River gorge in Jefferson County in central Oregon. Designed by T. Y. Lin International, the bridge was completed in 2000 to replace the Crooked River High Bridge. Parallel and west, the older bridge was built in 1926 and was not wide enough to accommodate increased traffic on US 97.
Ten Mile Creek Bridge is a Conde McCullough-designed bridge near Yachats in Lane County in the U.S. state of Oregon. It was listed on the National Register of Historic Places in 2005.
The Healdsburg Memorial Bridge is a steel truss bridge across the Russian River in Healdsburg, California, listed in the National Register of Historic Places. It can be seen from nearby U.S. Route 101 and is "Healdsburg's abiding structural symbol".
Ciénega Bridge is an open-spandrel arch bridge which crosses Ciénega Creek and the Union Pacific Railroad near Vail, Arizona. Originally constructed in 1921, the bridge was part of U.S. Route 80, a major transcontinental highway, from 1926 to 1956. Being the oldest bridge of its kind in Arizona, the Ciénega Bridge is listed on the National Register of Historic Places. The bridge also holds the title of being the longest open-spandrel concrete arch bridge within the state. Currently, the bridge carries Marsh Station Road, which is part of Historic U.S. Route 80 as of 2018.
The New Youngs Bay Bridge is a vertical-lift bridge over Youngs Bay on U.S. Route 101 (US 101) between Astoria and Warrenton. Including the approaches, it is 4,200 feet (1,300 m) long and was completed in 1964. The road bridge had been proposed since 1948 and was approved by the state government in the late 1950s. The routing across Youngs Bay for US 101 was chosen in 1955 over a more inland alignment that would have avoided the bay entirely. Construction began in March 1963 and was dedicated on August 29, 1964.
Rocky Creek Bridge No. 01089, also known as Ben Jones Bridge, is a concrete highway bridge spanning Rocky Creek along the Pacific Ocean coast of the U.S. state of Oregon. The bridge crosses a gorge near the creek's mouth, about 2 miles (3 km) south of Depoe Bay in Lincoln County. Built in 1927, the bridge originally carried U.S. Route 101 over the creek. After a stretch of the highway was relocated to make it straighter, the abandoned piece of the old highway became Otter Crest Loop Road, a local road west of the new highway.
The Raritan River Bridge is a rail bridge over the Raritan River, in New Brunswick and Highland Park in Middlesex County, New Jersey, U.S. The arch bridge carries the Northeast Corridor (NEC) at MP 30.92. It used by Amtrak, including Northeast Regional service, and New Jersey Transit's Northeast Corridor Line. It also crosses over New Jersey Route 18.
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