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The Robertson Tunnel is a twin-bore light rail tunnel through the Tualatin Mountains west of Portland, Oregon, United States, used by the MAX Blue and Red Lines.The tunnel is 2.9 miles (4.7 kilometers) long [1] and consists of twin 21-foot-diameter (6.4 m) tunnels.
Located in the Goose Hollow neighborhood, [1] the tunnels pass through a hillside locally known as Vista Ridge which is a half mile (1 km) west of downtown Portland. Sunset Highway, also known as U.S. Route 26, is carried through the tunnels, three lanes in each direction. They are Oregon's busiest tunnels.
TopoZone is a website operated by Locality LLC that offers free online topographic maps. It was founded in November 1999 by Ed McNierney whose company Maps a la carte, Inc. operated out of North Chelmsford, Massachusetts .
Portland (/ ˈ p ɔːr t l ə n d / PORT-lənd) is the most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated close to northwest Oregon at the confluence of the Willamette and Columbia rivers, it is the county seat of Multnomah County, Oregon's most populous county.
In addition to matching the Topozone URL's, the website offers free download of GeoTIFFs, which Topozone had only offered for a premium. TopoQuest started adding Canadian 1:50K scale topographic maps in July 2008, and USGS 1:100K and 1:250K scale topographic maps in March 2009.
Portland, the largest city in the U.S. state of Oregon, is the site of 34 completed high-rises at least 250 feet (76 m), four of which stand taller than 492 feet (150 m). [1] [2] [3] The tallest building in the city is the Wells Fargo Center, which rises 546 feet (166 m) in Downtown Portland and was completed in 1972. [4]
[2] [3] It has 5 principal cities, the largest being Portland, Oregon. [4] The U.S. Office of Management and Budget (OMB) identifies it as the Portland–Vancouver–Hillsboro, OR–WA Metropolitan Statistical Area, a metropolitan statistical area used by the United States Census Bureau (USCB) and other entities.
The Portland Skidmore/Old Town Historic District, created in 1975 and roughly bounded by Naito Parkway, Everett Street, 3rd Avenue, and Oak Street, is an important part of Old Town Portland. Attractions include the Saturday Market ; the Shanghai tunnels ; and Ankeny Square , site of Portland's oldest public art work, the Olin L. Warner ...