PROCESDINGS OF TEE P OLYTECHyiC ASSOCIATION. 973 



"With a margin in this estimate of nearly $1,000,000 for contin- 

 gencies, &c, after including contractors' profits in the schedule of 

 detail prices adopted, taken in view of the fact that any lower loca- 

 tion will reduce the quantity and cost of the work, and that a more 

 accumte examination of this location will probably reduce the quan- 

 tities and work assumed, it is believed that this sum total is not open 

 to any objections of inadequate amount. 



Under the above item of "land damage" is included the expense 

 of opening a street about 140 feet by thirty on the south side of the 

 pier to First street, and widening South Fifth street about twenty- 

 eight feet at one point and forty-two at the other for a length of 186 

 feet. The pier also occupies .pier extension areas on each end, about 

 390 feet front by 250 feet long on the Brooklyn side and about 290 

 feet front by 230 feet long on the N^ew York side. 



Deducting the cost of warehouses and tunnels, the causeway will 

 cost $3,500,000. The value of the warehouse lots is estimated at 

 $3,000,000, leaving the net cost $500,000. 



Income. 



The chief direct sources of income from this project will be by 

 tolls from foot passengers and vehicles, from wareliouses and wharves ; 

 the expenses will be for annual taxes, repairs, attendance, and engines ; 

 the incidental sources of income and ]3roperty valuation are not herein 

 assumed, though of a direct and palpable character in this connection. 



In his report of September 1, 1867, on the East river brklge, Jno. 

 A. Roebling, C. E., shows that New York in another half century 

 will rank above Liverpool and London, as a commercial center ; that 

 the population of New York in 1870, will be 1,300,000 and of 

 Brooklyn 531,000, or 1,831,000 in all ; and in 1880, in New York 

 1,950,000, and in Brooklyn 1,068,000, or 3,018,000 in all ; that on 

 the basis of the aggregate population of 1865, the annual transit of 

 the Union Ferry Company to a portion only of Brooklyn, was 

 40,000,000 of passengers, not mentioning vehicles ; that the estimated 

 transit in 1870, will be 80,000,000 passengers, while the improved 

 facilities of the bridge will make a large percentage of increase 

 peculiar- to itself ; that a toll on 40,000,000 passengers, from one to 

 three .-cents each, amounts to $400,000 to $1,200,000 per annum; and 

 tliat tlie increase of taxable property in value in Brooklyn, would 

 pay the cost of the bridge in about three years, estimated at five and 

 one-half per cent per annum. 



