Abstract
ON December 16 H.R.H. Princess Mary inaugurated the work of excavation for the new tunnel under the River Mersey, sanctioned by Parliament last August. As is well known, a railway tunnel of invert form and 26 ft. in width has long been in existence; it was begun in 1881 by the Mersey Railway Company and completed some years later. The new tunnel is to be a highway and will be the largest of its kind. The major part of the tube will be circular in section, with an internal diameter of 44 ft., the road-way being constructed so as to take fullest advantage of the width. It will thus provide a four-way road for slow and fast two-way traffic, with side-walks of about 4 ft. for purposes of traffic control, etc. The cost of the tunnel is to be 4,750,000l., half of which will be provided by the Ministry of Transport in view of its highway character.
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BOSWELL, P. The Geology of the New Mersey Tunnel. Nature 116, 907 (1925). https://doi.org/10.1038/116907a0
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DOI: https://doi.org/10.1038/116907a0