Alex Fraser Bridge
49.159958 - 122.942891Koordinaten: 49 ° 9 ' 35.8 "N, 122 ° 56' 34.4 " W
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The Alex Fraser Bridge (also called Annacis Bridge ) is a road bridge in Greater Vancouver in British Columbia, Canada. It is in the course of Highway 91, which crosses coming from Richmond Annacis Iceland and the southern arm of the Fraser River and connects to the Delta District.
It is named for Alex Fraser (1916-1989), a former Canadian Minister of Transport.
The bridge has two carriageways with three lanes and a sidewalk on both sides. It is including access ramps total of 2525 m long and crosses the river with a clear height of 55 m.
Has the cable-stayed bridge with two H-shaped pylons and fan-shaped arrangement of the stay cables a main opening with a span of 465 m and two side openings each with 183 m span.
The stems of the pylons 158 m made of reinforced concrete are arranged above the road initially slightly bent inwardly to enable vertical rope levels above the carriageway edge. They are braced by cross braces below the bridge deck and below the vertical peaks, in which the anchor boxes for a total of 192 stay cables are located. The bridge deck is made of a grid of longitudinal and transverse beams to which are attached precast concrete slabs. It has been uniformly collected from pylons in both directions in the cantilever. In order to avoid vibrations of the cantilevered decks, they were stabilized with bracing to the pylon feet. The bridge deck mounted as a floating cover on the ropes only, it does not lie on the transverse girders of the towers on.
When Buckland & Taylor along with Klohn Crippen Berger planned and 1986 finished Alex Fraser Bridge for the first time from Jörg Schlaich for the Second Hooghly Bridge ( Vidyasagar Setu ) conception of a road carrier of a steel grate in the composite was developed in Calcutta realized with a concrete slab. The Second Hooghly Bridge was planned to begin in the early 1970s but not completed until 1992.
The Alex Fraser Bridge had the longest span cable-stayed bridges all around the world, until it was replaced by the Skarnsund Bridge in Norway in 1991.