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The Middle Arm Bridge is one of three transit bridges in
The Middle Arm Bridge is one of three transit bridges in Metro Vancouver
The Metro Vancouver Regional District (MVRD), or simply Metro Vancouver, is a Canadian political subdivision and corporate entity representing the metropolitan area of Greater Vancouver, designated by provincial legislation as one of the 28 ...
. It spans the middle arm of the Fraser River
The Fraser River is the longest river within British Columbia, Canada, rising at Fraser Pass near Blackrock Mountain in the Rocky Mountains and flowing for , into the Strait of Georgia just south of the City of Vancouver. The river's annual d ...
, linking Lulu Island
Lulu Island is the name of the largest island in the estuary of the Fraser River, located south of Vancouver, British Columbia, and the second-most populous island in British Columbia, after Vancouver Island. The city of Richmond occupies most ...
with the Vancouver International Airport
Vancouver International Airport is an international airport located on Sea Island in Richmond, British Columbia, serving the city of Vancouver and the Lower Mainland region. It is located from Downtown Vancouver. It is the second busiest ...
on Sea Island. It is used by the airport branch of the Canada Line
The Canada Line is a rapid transit line in Metro Vancouver, British Columbia, Canada, that is part of the SkyTrain system. The line is owned by TransLink and InTransitBC and is operated by ProTrans BC. Coloured turquoise on route maps, it ope ...
, which opened in August 2009.
The bridge is a box girder prestressed concrete
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" ( compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. Post-tensioned concreted i ...
bridge, and is built using cost-efficient cantilever
A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a canti ...
construction. The integrated arch
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.
Arches may be synonymous with vaul ...
form is designed to appear minimal, while adequately supporting the weight of the trains that cross it.
The Moray Bridge
The Moray Bridge, also known as the Moray Channel Bridge, and formerly the Middle Arm Bridge, is a crossing over the middle arm of the Fraser River in Metro Vancouver. Richard Moody, who would name geographical features, such as this channel, afte ...
, a swing bridge nearby, was also previously referred to as the Middle Arm Bridge.
See also
*List of bridges in Canada
This is a list of bridges and viaducts in Canada, including those for pedestrians and vehicular traffic.
Historical and architectural interest bridges
There are only a few covered bridges left in Canada compared to all those that were built in t ...
* List of crossings of the Fraser River
This is a list of bridges, tunnels, and other crossings of the Fraser River in the Canadian province of British Columbia. It includes both functional crossings and historic crossings which no longer exist, and lists them in sequence from the South ...
References
Canada Line Railway bridges in British Columbia Bridges in Greater Vancouver Bridges over the Fraser River Transport in Richmond, British Columbia Buildings and structures in Richmond, British Columbia Rapid transit bridges Sea Island (British Columbia) {{BritishColumbia-transport-stub