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Greenwich foot tunnel
The Greenwich Foot Tunnel crosses beneath the River Thames in East London, linking Greenwich (Royal Borough of Greenwich) in the south with the Isle of Dogs (London Borough of Tower Hamlets) to the north.
The 'Friends of Greenwich and Woolwich foot tunnels' (FOGWOFT) was established in September 2013.〔(Friends of Greenwich and Woolwich Foot Tunnels website )〕
==Design and construction==
The tunnel was designed by civil engineer Sir Alexander Binnie for London County Council and was constructed by contractor John Cochrane & Co. The project started in June 1899, and the tunnel was opened on 4 August 1902. The tunnel replaced an expensive and sometimes unreliable ferry service and was intended to allow workers living on the south side of the Thames to reach their workplaces in the London docks and shipyards then situated in or near the Isle of Dogs. Its creation owed much to the efforts of working-class politician Will Crooks who had worked in the docks and, after chairing the LCC's Bridges Committee responsible for the tunnel, would later serve as Labour MP for nearby Woolwich.
The entrance shafts at both ends lie beneath glazed domes, with lifts (installed in 1904, upgraded in 1992 and again in 2012) and helical staircases allowing pedestrians to reach the sloping, tile-lined tunnel at the bottom. The cast-iron tunnel itself is long and deep and has an internal diameter of about . Its cast-iron rings are lined with concrete which has been surfaced with some 200,000 white glazed tiles. The northern end was damaged by bombs during the Second World War and the repairs included a thick steel and concrete inner lining that reduces the diameter substantially for a short distance.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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