ADOPTED BY THE BOARD OF DIRECTORS, TORONTO I’UfNTED BY BRE^yE^l', IVj'rilAIL AND CO., KING STREK •- ¥< y V V Y Y y vcY / €nrniitn cnii (Hudjili Mmaq. CHIEF ENGINEEH’S REPOET, ADOPTED BY THE BOARD OF DIRECTORS, May 21, 1852» TORONTO: miNTED BT BREWER, M'FHAII, AND CO., KING STKEEt! 1852. ■T TORONTO AND GUELPH EAILVAT COMPANY. DIRECTORS; 3Prcsftient John G. Bowes, Esq., Mayor of Toronto. Ufce-^resftient. S James M. Strachan, Esq. -jc-' William Clarke, Reeve of Guelph Town. p) Benjamin Thurtell, Reeve of Guelph Township. John Lynch, Reeve of Chinguacousy. Hon. J. H. Cameron, Toror^o. A. M. Clark, Esq., ** George Duggan, Jr. Esq. ‘‘ John Fiskin, Esq., Wm. Gooderham, Esq. “ G. J. Grange, Esq., Guelph. William C. Gwynne, Esq-, Toronto. George Herrick, Esq. “ John Hutchison, Esq. “ Lewis Moffatt, Esq. “ E. F. Whittemore, Esq. “ Frederick Widder, Esq. “ Secratarg anti STraasutcr. Samuel Thompson, Esq. ISnflfnaar. Walter Shanly, Esq. SoUcitor. John W. Gwynne, Esq., Q. C. BSaufeers. The Bank of Upper Canada. 781304 Digitized by the Internet Archive in 2017 with funding from University of IllinoiSjUrbana-Champaign Alternates % https://archive.org/details/chiefengineersreOOtoro REPORT Engineer Department, T. and G. Railway, Toronto, 21st May, 1852. To John G. Bowes, Esq., President Toronto and GuelpH Railway Company. Sir, — The preliminary Surveys to determine the most eligible route for the proposed connexion of Guelph with Toronto, by Railway, which were committed to my charge by two resolutions of the late Provisional Committee, dated respectively 24th January, and 17th March last ; being now brought to a close, I have the honor to submit the following report upon the results of those surveys, and the conclusions they induce me to form as to the selection of the line, which I deem it for the best interests of the Company to recommend. The reports of progress submitted from time to time to the Provisional Committee, related entirely to one route ; that which I have designated below as the “ Central” one, passing through North Toronto Township and Esquesing, by George- town and Acton. In order now to lay clearly before you the whole of the proceedings, I will, with your permission, review step by step, all that has been done since the commencement of operations, towards obtaining what I conceived to be of the highest importance to the success of your project, namely, — ao thorough a knowledge of the topography of the region of country lying between the terminations of the proposed road, 6 as would satisfy the Board and the Public, that in deciding on the route to be adopted, due regard was had to combining as far as practicable the two great desiderata in all such cases : Economy of construction in the present, with the greatest probable amount of Commercial Usefulness in the Future. I was called to this City towards the close of November last year, to treat with the Committee for the management of the work, but did not receive any definite instructions as to the course of operation to be pursued, until 8rd January, when the Secretary requested me to make such a reconnois- sance of the line of country, through which, from an inspec- tion of the map, it was presumed the road would pass, as would enable me to determine where the cost of surveys might be most judiciously incurred. A reconnoissance of that nature I at once set about effect- ing, and on 23rd January reported to the Board, that the Engineering difficulties to be encountered were so much more formidable than I had been led to suppose, that before recom- mending any thorough survey being undertaken, it was desirable, in fact indispensable, to ascertain by instrumental examinations, at what point the summit of the elevation on which Guelph is situated, (being a continuation of the lofty table land, known at Hamilton as “ Burlington Heights,” and further West as “ Flamboro’ Heights,”) could most easily be attained. The ascent of those heights, from the abrupt front which they presented, forming a perpendicular and almost continu- ous rocky barrier, very lofty, and of transverse direction to your road, at once struck me as an obstacle for which you had not been prepared, and of such magnitude as might pos- sibly altogether deter you from prosecuting your design. I advised accordingly, that the surveys should be limited to an examination of the Mountain, until the existence of a practicable ascent had been placed beyond doubt, and was 7 authorized to carry out my views. ^'Before organizing an Engineering staff, 1 deemed it advisable to devote some fur- ther time to exploring the opposing barrier referred to ; which object having engaged my personal attention until the middle of February, I came to the conclusion, as stated in my report of 15th March, that within the widest lateral range which I felt at liberty to assume for the location of your road, stretching from the Centre line of Trafalgar Township, on the South, to the Esquesing and Erin line, on the North, there exist but two routes whereby the summit of the table land can be reached by Railway, within the bounds of any possible outlay that you might be prepared or willing to incur. The Committee having declined to fix, for my guidance, any intermediate localities to which the road was to be carried, I proceeded to select the best routes in an Engineering view, by taking measures to establish a just comparison between their topographical characteristics : and which could only be arrived at by careful and searching instrumental examina- tions ; because in both the passes referred to, the features of the Mountain front, elsewhere uniform and unbroken, are there so shattered and distorted by a long series of Geologi- cal changes, as to baffle the most practised eye to discover, that in point of cost, either route would have any decided ad- vantage over the other ; though at the same time there might exist such differences between them, in the outward confor- mation of the ground, discoverable only by the spirit-level, as would largely affect the estimate of “ Grading.^’ I ac- cordingly organized two exploring parties, instructing one, commencing at Milton, in Trafalgar, to run through the val- ley of the Sixteen Mile Creek, until the summit of the heights was reached, and so on to Guelph : the other, commencing at George Town, in Estjuesing, to follow the Valley of the West Credit River, and extend their explorations also to Guelph. Those two streams, or their valleys, presenting the only “ breaks” in the face of the precipice, through which a 0 8 direct rail communication between Toronto and Guelph, can in my judgment ever be effected. Operations had only just been commenced, when* I Was instructed to the effect, that it was deemed inexpedient then to survey more than one route — and that the Northerly one, via Georgetown and the West Credit valley : I at once therefore altered my arrangements, by withdrawing the party from the Southern exploration, and sending it to the aid of that engaged in the Northern pass, where the very great and almost unpre- cedented depth of the snow, would in any case have demand- ed an augmentation of the force at first employed. The actual surveys were not commenced until the 18th February. On the 15th March, I reported the existence of a practicable, but costly, route from Georgetown to Guelph, taking in Acton. The practicability of the ascent being thus established^ I was empowered to produce the Surveys from Georgetown, Eastward, to such point on the Main Credit River as I might find best adapted for conveniently crossing the stream and valley, and thence to seek the most direct practicable route to Toronto. After a careful personal reconnoissance of the country from Georgetown to the Humber, I directed my assistant to guide the Surveys to Silverthorn’s Mills, (Meadowvale,) in the Township of North Toronto ; at which place' the' banks' of the Credit are less bold, and the facilities for bridging better, than at any of the many points examined higher up the stream. From Silverthorne’s, the line was continued in a direct course to Fisher’s Mills, on the Humber, and thence to Toronto, entering the City near the Toll-gate on Queen Street, and terminating at the Queen’s Wharf. On the 29th March, I submitted the result of this “ trial line,” showing that upon that course there exists a feasible route, presenting no difficulties that need deter the citizens of Toronto, and other Share-holders, from prosecuting an enter- % 9 prize in which they had already embarked with so much spirit. The “ trial” Surveys so far made, were sufRciently search- ing, supposing the route to which they referred to be uncon- ditionally adopted, to admit of the next important step being taken, namely, — the final “ locating” of the road preparatory to its being declared open for competition to contractors. As is usual in all such cases, however, considerable diver- sity of opinion existed, out of doors, giving rise to much Newspaper discussion, as to whether the one line examined was certainly “ the best one,” or whether the interests of the Company would not be better consulted, by ascertaining from actual survey, the comparative merits of certain other mooted routes. Accordingly, on the 3rd April, I received a copy of a resol- ution, passed at the first session of the present Board of Di- rectors, instructing me to survey a line “ from Georgetown through Brampton to Toronto,” or “ any other line” that I might “ deem advisable for the interests of the Company.” The responsibility of deciding on the route thus in a great measure devolving upon me, I pursued the course usually taken by Engineers under similar circumstances, namely, — that of providing myself with facts wherewith to sustain whichever route it might become my duty to advocate. Such facts could only be gathered from instrumental ex- aminations, and I accordingly exercised the power vested in me, by carrying out what I had designed in the outset of operations : Surveying each route under discussion, namely, — the Southern one, through the still untried valley of the Sixteen ; and, below the Mountain, two others. North of the central one already run : the one passing through Brampton, the other through Brampton and Weston ; being desirous, in arbi- trating between the rival locations, of placing them before you in their true merits and in all their bearings. This course was, I feel assured, the best for the interests 10 of the Company, because all experience in such matters goes to show, that so long as there exists the probability of improv- ing upon a route, when the work must be of an expensive character, as in the case before us, the cost of thoroughly surveying the country is money judiciously laid out. It was also the course certain to prove eventually most satisfac- tory to the Board, as enabling them to meet the clamor amongst “ those without,’’ which local partialities and disap- pointed individual interests will ever give rise to, where a coveted prize has to be adjudged undivided to some one of many competitors. I have compressed the foregoing preface into as small a compass, as a detailed exposition of the proceedings of the last four months seemed to me to admit of, and will now lay before you a sketch of each of the Routes explored, and which for perspicuity I designate as follows : — 1st, The “Southern” or “ Streetsville and Milton” Route. 2nd, The “ Central” or “ Meadowvale and Georgetown” Route. 3rd, The “ Humber and Brampton” Route. 4th, The “Weston and Brampton” Route. To simplify the comparisons I am about to draw between the foregoing lines, I will here premise, that with the excep- tion of the last named, one crossing point of the River Hum- ber is common to them all, that being on Lot No. 8 of Etobicoke, a little below Fisher’s Mills, where the valley of the stream is 750 feet wide, and the water 105 feet below the “ Grade Line” of the Road ; thence to the City limits, or to any point within the City, there are scarcely ordinary diffi- culties to stand in the way of construction. The “ Southern Route,” departing from the Humber at the point above noted, is straight to where it intersects the Credit, close by and South of the Village of Streetsville ; thence ^gain, we have an almost undeviating straight line to Milton, 11 in Trafalgar, at which point, where we are 412 feet above the Lake, commence the difficulties of scaling the Heights. Leaving the Village of Milton close on the right, and passing a short distance in rear of Peru Mills,” the line follows the general direction of the Valley, having to cross the Sixteen Mile Creek twice within a distance of one mile, and at a least elevation of 30 feet above its waters. On reaching the “ Third Line” of Nassagaweya, we are clear of the valley and on comparatively even ground, but still ascending. In the first Concession of that Township, we reach the summit of the Table land, 920 feet above the Lake, being just 10 miles from the foot of the ascent at Milton, having in that distance risen 508 feet. The Township of Puslinch is entered on Lot 18, and on the front of the tenth Concession, an abrupt rocky ridge, at right angles to the line, has to be crossed, the width of which may be taken at 4000 feet, and its elevation above the Lake 1011 feet ; thence we have a direct route, nearly due West, to the Guelph boundary, enter that Township at the angle of the dividing line between Blocks C and G, and continuing on same course to the Town of Guelph, cross the Speed a little North of the Dundas Bridge, having altogether shunned the Eramosa Creek, which upon every other route surveyed, involves a crossing of no trifling magnitude. The Central route is straight from the Humber to the Es- quesing line, the Credit River being crossed, very favorably, at Silverthorn’s Mills, in tlie third Concession of North To- ronto. From the Toronto and Esquesing line to Georgetown, the course is perfectly straight, crossing the West Credit Stream, in the tentli Concession of the last named Township, and leaving Norval Village 1^ mile to the North. At Georgetown, which stands 635 feet above the Lake, the ascent of the mountain on this route may be said to com- mence, as it does at Milton on the other. Leaving George- town, the line has a direction about S. 70° W., passes Clcndin- 12 an’s Mills in the sixth, and Lawson’s Mills on the fourth Con- cession, and so on to Acton ; 1^ mile beyond which place, the summit is attained, 971 feet above Lake Ontario, and 336 feet above Georgetown, from whence it is distant 7 miles. From this summit to Guelph, I have had three surveys made ; two only of the lines are practicable ; one of them follows the old course traced by Messrs. Brough and Wells ; the other, more northerly, passes near the Mills at Rockwood. Those two routes converge to the same point on the River Speed at Guelph, close by Allen’s Mills ; the latter line, that via Rockwood, has in every respect the advantage of the other, and would be the one adopted, should the “ West Credit” Route come to be elected over that through the valley of the “ Sixteen.” As those two routes, Nos. 1 and 2, are to be compared with one another throughout their entire length, I shall proceed to strike a balance between them, before touching on the other two, both of which have reference to the Eastern section of the road only. The characteristics of all that portion of the “ Southern line,” lying below the Mountain, are generally similar to those of the corresponding portion of the “ Central Line.” In point of directness they are about equal, and so with regard to the River crossings. On both, there exists a most objection- able ridge, dividing the Etobicoke valley from that of the Credit, and which in both cases would compel us to adopt a gradient of 53 feet in the mile for a distance of 2^ miles. From the crossing of the Main Credit, on the Central Route, to Georgetown, 10 miles, the character of the work would be neither very heavy nor expensive, except at the crossing of the West Credit stream, and the maximum gra- dient 47 feet per mile. On the Southern Route, after the Credit has been crossed at Streetsville, a sudden descent in the ground, and, further on, an abrupt “ step” bars the way, again forcing us to the 13 expedient of a 53 feet gradient, fora distance of 1^ mile, and even that would be obtained by recourse being had to a cut- ting of 40 feet in depth, and an embankment of great length, varying in height from 30 to 46 feet. This plane added to that on the east side of the Credit, gives 4 miles of 53 feet gradient, below the mountain, on the Milton route, against 2^ miles on the Georgetown line ; a feature, which alone, even were the advantage in point of cost not ranged upon the same side, entitles the Eastern section of the Central route to an unqualified preference over its Southern rival. But it is on the merits of the portions lying West from Milton and Georgetown, that the verdict will mainly hinge. On the Southern route, the general summit of the table land is 920 feet, on the Central 971 feet above Ontario. In the former case, the highest point is reached in a distance of 10 miles from, and an elevation of 508 feet above, Milton ; in the latter case, from Georgetown 7 miles, and above it 336 feet, those two places being assumed as the “ foot of the mountain’* on their respective routes. The above figures, comparing heights to be overcome with distances, show a balance in favor of the route through the West Credit valley, over that through the valley of the Six- teen Mile Creek ; in addition to which, the “ rise” is more evenly distributed over the whole distance on the former, than on the latter line, where the profile presents a series of abrupt “ steps,” which would cause the cuttings, in seeking for simi- lar grades (53 feet per mile), to compare impracticably with those, on the West Credit Route ; and with similar cuttings, we would have to put up with 4 miles of 70 feet gradient and a startling amount of rock excavation. In point of “ allignement” the more Northerly is also the more desirable route ; there being from Georgetown to the summit but two gentle deflections called for, whereas the other demands three, of much lesser angle, in order to adapt itself to the sinuous windings of the valley. 14 From the summit to Guelph, the superiority of the North- ern over the Southern line is so decided, as scarcely to call for comment ; it will be sufficient to say, that the former has a gentle and uniform descent, the whole fall, westwardly, from the summit to the market square in Guelph, being 171 feet : on the latter, a rocky ridge is intersected, standing up 90 feet above the general surface of the mountain top, and having a base of about 4000 feet in width. The surveys of both these routes have been made with such care, as to warrant me in pronouncing that the following facts have been fully and fairly substantiated : — Istly, That the Eastern Section of the Streetsville route would require two 53 feet gradients, isolated from one anoth- er, of the combined length of 4 miles, whilst the correspond- ing portion of the Meadowvale line shows a necessity for but one such plane, the length of which would be 2^ miles. 2ndly, That the Western Section of the former line would exact a maximum p’adient of 70 feet per mile, for nearly 4 miles ; and 2 more miles of 53 feet ascent per mile ; whereas the Georgetown route admits of the summit being attained at less cost, in a distance of 6 miles, and on the least of the gra- dients above specified. 3rdly, That the amount of curvature is greater, and the character of the curves more objectionable on the Sixteen Valley route, than on that through the valley of the West Credit. 4thly, That a glance at the “ profiles” is sufficient, without going into any calculations whatsoever, to show that, in O O U < O X W Q O W o o o ■"O ® o o o CD o CD . o lO lO »o JO o (M (3? 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