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Document 35, p 3

65
"shall be swept away between any of the Piers, but that the Quicksand under
"it will presently follow like water itself; and an Excavation may be made
"in a few hours, as deep or deeper than any of the Piles that guard the Piers:-
"when a downfall must be the immediate Consequence, On these principles
"therefore the Bridge ought not to be attempted in this spott and if no better
"can be found in any other situation there is but one Method of dealing
"with such Ground which has succeeded where expence was not regarded
"and is by carrying a solid Wall quite thro’ the River from side to side, about
"6 feet high; and in this Case it must be 42 feet Broad" The preceding Extracts
are made from a Copy of Mr Wooler’s Letter of the 19th July 1775 to Mr Pickernel
the perusal of which will more amply set forth the Grounds and Reasons of
Mr Wooler’s opinion; that no Bridge under such Circumstances, is likely
to be accomplished, at any limitted Expence, he concluded with saying
"I had the honour to mention this Method (that is of the Solid Wall) to Mr
"Aynesley when there was a doubt about the nature of the Ground some
"time before their Surveyor found out the Stratum of the Clay but he then
"looked upon the Expence to exceed their Abilities but however, after all, if
"ever a Stable Bridge be made there, I do not know any other means to Effect
"it-You will lay this before the Gentlemen for their Consideration."
After this Mr Pickernel proceeded to sink a Well or Shaft in the Solid
Soil of Tyne Green, near the place where the South Abutment of the intended
Bridge was to be when passing through the Stratum of Gravel found the
Quicksand at nearly the same depth as in the foundation Pitt for the Pier
on the other side into which he thrust the Iron Barr as before; and covered
up the Shaft till Mr Wooler should come to Examine the Premises.
He also proceeded to try the River by Boring in other places and particularly
in the Pool below the East Boat, that is, a little above the place where Mr Smeaton
afterwards pitched upon to Build a Bridge for Mr Errington, on Account
of which Borings, being transmitted by Mr Pickernell to the Clerk of the
Peace, reference being thereto had will more fully appear: but which went
3 to

Note: Mr Smeaton's Memorial concerning Hexham Bridge, p 3

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Transcribed by CTW and TB