M25 Runnymede Bridge
|M25 Runnymede Bridge|
The M25 Runnybridge pictured from southern towpath immediately downstream
|Designer||M25 Ove Arrup
A30 Edwin Lutyens
|Height||23 feet 0 inches (7.01 m)|
|Number of spans||1|
The M25 Runnymede Bridge is a motorway, A-road and pedestrian and cycle bridge built in the 1940s, 1980s and expanded in the 2000s carrying the M25 and A30 across the River Thames near the uppermost end of the Staines upon Thames and Egham reach of river. It is oriented north–south and is southwest of Heathrow Airport. It in fact consists of the Runnymede Bridge and the New Runnymede Bridge.
In part designed by Sir Edwin Lutyens this is a single-span arch bridge built of brick to carry the A30's Staines Bypass[n 1], near the uppermost end of the Staines upon Thames and Egham reach of river above Penton Hook Lock and below Bell Weir Lock. It is an arch bridge which is specifically of the spandrel arch design supported by two outer walls (spandrels) in red brick infilled with looser material such as gravel. Until the 2013 construction of the present Walton Bridge this was the first single span (without piers) across the River Thames heading upstream from the river's mouth.
New Runnymede Bridge
It is a single arch bridge of approximately the same form, but is made up of a series of parallel concrete frames: these allow light to penetrate upwards underneath and transfer loads vertically to avoid disturbing the foundations of the westerly bridge companion. The motorway bridge was in the first decade of the 21st century widened to six lanes each way, the widest in Britain.
Notes and references
- The old spelling by-pass has become less common in British English in favour of bypass instead.
|Next crossing upstream||River Thames||Next crossing downstream|
|Albert Bridge (road)||M25 Runnymede Bridge
Grid reference: SU967772
|Staines Bridge (road)|
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