Remarks on the Present System of Road Making: With Observations, Deduced from Practice and Experience, With a View to a Revision of the Existing Laws, and the Introduction of Improvement in the Method of Making, Repairing, and Preserving Roads, and Defending the Road Funds from Misapplication. Seventh Edition, Carefully Revised, With an Appendix, and Report from the Select Committee of the House of Commons, June 1823, with Extracts from the EvidenceMcAdam, John Loudon
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Remarks on the Present System of Road Making: With Observations, Deduced from Practice and Experience, With a View to a Revision of the Existing Laws, and the Introduction of Improvement in the Method of Making, Repairing, and Preserving Roads, and Defending the Road Funds from Misapplication. Seventh Edition, Carefully Revised, With an Appendix, and Report from the Select Committee of the House of Commons, June 1823, with Extracts from the Evidence
McAdam, John Loudon
Macadam roads; Roads -- Great Britain
From the observations which you have made in this employment, are you
able to give the Committee any information as to the best mode of
improving the roads of the kingdom generally?—The first and most obvious
improvement is to shorten distances; but even that must be governed by
circumstances often of a local nature; a sound foundation, and the
contiguity of good stone or gravel to a road, should not be overlooked
in choosing a new line, or departing from an old one. In forming a new
line in a level country, the transverse section should approach as near
as possible to the form of the accompanying sketch No. 1, and in a hilly
country to that of No. 2; in the former, the water from one half the
road would be carried into a ditch on the field side, and that of the
other half into a ditch between the footpath and hedge-bank. When it is
necessary to form a road on the side of a hill, the ditch should be on
the higher side of the road, where it will receive the water falling
from the high ground, and so keep the foundation of the road dry. I have
figured the breadths of a good average turnpike road on sketch No. 1,
but the breadth will frequently depend upon circumstances of a local
nature. Near to great towns, it would be highly advantageous if the
centre of the road, for about twelve feet in width, were to be paved
with hard well-squared stones, nine inches deep, and the sides made with
hard rubble stones or gravel. I need scarcely mention, that in applying
the materials to a new line of road, the stones should be broken into
pieces of an uniform size, as near as may be; that the larger should be
laid of nearly an equal depth over the whole surface of the road, and
the smaller, mixed with gravel, should be placed upon them. The
repairing of roads should be conducted in the same manner as far as it
is practicable; but, after all, the only sure way of getting good roads
is, for the trustees to employ men of education and science as their
surveyors. In a few instances, where this has been done, the best
consequences have resulted, and in no case is if more conspicuous than
in the neighbourhood of Bristol, where Mr. MᶜAdam is the surveyor.
Will not a consequent impediment arise to the employment of men of
education and of superior ability as surveyors, from the smallness of
the funds upon small trusts or districts?—For that reason, I would
recommend the consolidation of the several trusts, in each county, into
one general trust, under the authority of one general act of parliament,
leaving the adoption, however, of the acts to the discretion of the
several trusts respectively in each county, making it compulsory only on
the minority, at the expiration of a time to be limited, when a majority
in amount of toll shall call for its adoption, and after insertion in
the provincial papers and London Gazette.
Public-domain text, read in full here on John Shaqi.
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