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Report - - Feltham Cavalry Tunnel, London, Jan 2021 | Underground Sites | 28DaysLater.co.uk

Report - Feltham Cavalry Tunnel, London, Jan 2021


theurbexcouple

28DL Full Member
28DL Full Member
Explore:
Myself(John) and Holly have known about this tunnel for a while as its in our local area of where we live, in a park close to us. We have visited here before, not for urbex purpose, but just to see what the tunnel was all about really and to be fair it holds a strange but weirdly cool vibe, knowing what history is held here. When we visited the site of the tunnel, the weather was horrible the night before so the river running along side the tunnel had overflown the banks of the footpath you can walk down, which made things difficult as we were literally in a foot deep of water, of course with no wellies!!! We got soaked and cold but didn't dampen our explore and carried on trudging through the water, not to mention the horrendous amounts of thorn bushes.

History:
Known locally as Feltham Cavalry Tunnel or 40 Acres Tunnel there is an unlit culvert that runs for 750 yards under the former site of Feltham Marshalling Yards in West London. It runs adjacent to the redirected River Crane and was constructed to provide relief should that river ever flood. This was particularly important as above was once one of Britain busiest railway yards (since being demolished). It is directly connected in a straight line to the original railway tunnel which allowed the River Crane to go under the old LSWR railway line. The engineers note at the time of building the Marshalling Yards in 1918 provide more further insights.

"The most difficult portion of the undertaking has been the coffer dam work on the line of the river and stream. Apart from the ordinary earthwork the chief engineering features have been the provision of a new road bridge with a square span of 70ft at the Feltham Station end of the yard; the construction of a culvert 240 yards long by 12 ft span to accomodate the Meropolitan Water Board’s mains; the diversion of the River Crane for a quarter of a mile into a culvert under the yard and provision of a relief culvert for use in times of flood, and also the culverting of a mill stream.

"The culvert for the River Crane has a 20ft span for a length of 750ft and the flood opening adjoining has a 28ft span for a similar length. The depth from the footings of the abutments to the crown of the arch averages 14ft. The abutments and centre pier for these two culverts are in concrete faced with blue brindle bricks. The segmental arches have the lower rings in brindles and upper rings in London stock bricks. The culvert for the mill stream also has a 20ft span for about 750ft. The curved portion of the culvert is covered over with ferro concrete decking and the remainder by an arch, the abutments being of similar construction to the river culvert.

Thank you for reading and hope you enjoy the pictures we took below of our exploration.
See ya later!!
Holly & John :D

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