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The Vista Ridge Tunnels are highway tunnels through the Tualatin Mountains ("West Hills") of Portland, Oregon, United States. 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.
The main span, near the Washington side, is 600 ft (183 m) long with 144 ft (44 m) of vertical clearance at low river levels. The bridge was named for Glenn Jackson, the chairman of the Oregon State Highway Commission and later the Oregon Economic Development Commission. [8] The average weekday traffic during 2019 was 166,152 vehicles. [2]
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 (on the Pacific Highway West No. 1W , former Oregon Route 99W ), and light rail (MAX ...
Many streets in Portland are one-way; streets in downtown Portland (Southwest Portland bounded by I-405 and the Willamette River) are virtually all one-way, forming a grid of alternating street traffic: for north-south streets, odd-numbered avenues (1st, 3rd, etc.) are southbound, while even-numbered avenues (2nd, 4th, etc.) are northbound, and ...
The Interstate Bridge (also Columbia River Interstate Bridge, I-5 Bridge, Portland-Vancouver Interstate Bridge, Vancouver-Portland Bridge) is a pair of nearly identical steel vertical-lift, Parker through-truss bridges that carry Interstate 5 traffic over the Columbia River between Vancouver, Washington and Portland, Oregon in the United States.
The "Terwilliger curves" is the name given to a 1.7-mile (2.7 km), six-lane section of Interstate 5 (I-5) in Portland, Oregon, known as one of the most dangerous stretches of highway in the state. Named for its physical characteristics and proximity to Terwilliger Boulevard , it first opened in 1961 and soon became known for its high crash rate.
The Marquam Bridge / ˈ m ɑːr k əm / is a double-deck, steel-truss cantilever bridge [1] that carries Interstate 5 traffic across the Willamette River from south of downtown Portland, Oregon, on the west side to the industrial area of inner Southeast on the east. It is the busiest bridge in Oregon, carrying 140,500 vehicles a day as of 2016. [2]
It is the only suspension bridge in the Willamette Valley and one of three public highway suspension bridges in Oregon. [2] The bridge has a 1,207-foot (368 m) center span and a total length of 2,067 feet (630 m). [3] It is the tallest bridge in Portland, with two 400-foot-tall (120 m) towers and a 205-foot (62 m) navigational clearance. [4]