26 POOLE'S SUKVEY FROM SAN DIEGO TO FORT YUMA. 



necessarily be hypothetical in the absence of a knowledge of the ultimate and exact position of 

 the road bed on every part of the line. 



Assuming, for the purpose of this estimate, that the route is about equally divided into two 



classes of cheap and expensive work, though the cheaper is largely in excess, we have 10 miles 

 at the western and 85 miles at the eastern end to be estimated at the lower rate. 



The probable average cost of a single mile of this class at present prices, in California, will be 

 for graduation, bridging, and masonry : 



10,000 cubic yards earthwork, at 30 cents $3,000 



10 feet bridging, at $15 150 



Culverts and drains 30 



Cost of graduation, bridging, &c., for one mile 3,180 



The probable cost of a single mile of the more expensive part will be for the same — 



50,000 cubic yards earthwork, at 30 cents $15,000 



10,000 cubic yards rock excavation, at $3 30,000 



500 cubic yards masonry, at $10 5,000 



10 feet truss bridging, at $40 400 



15 feet trestle bridging, at $20 300 



300 feet drains and small culverts 300 



Grubbing and clearing 200 



Cost of graduation, bridging, and masonry, one mile 51,200 



ESTIMATED COST OF SUPERSTRUCTURE FOR ONE MILE. 



2,000 oak ties, 80 cents ■ $1,600 



90 tons iron rails, (60 pounds to the yard,) chairs, and spikes, at $80 7,200 



Transporting materials, track laying, &c 1,000 



Cost of superstructure, one mile 0,800 



ESTIMATED COST OF EQUIPMENT. 



The cost of the equipment of the whole road complete will be — 



FOB LOCOMOTIVES AND CARS. 



10 locomotives and tenders, $8,000 $80,000 



24 passenger cars 2,500 60,000 



6 baggage cars 1,200 7,200 



20 cattle cars 600 12,000 



40 freight cars 800 32,000 



15 gravel cars 500 7,500 



10 hand cars 100 1,000 



Cost of locomotives and cars $199,700 



