26 
POOLE’S SURVEY 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. 9,800 
ESTIMATED COST OF EQUIPMENT. 
The cost of the equipment of the whole road complete will be— 
FOR LOCOMOTIVES AND CARS. 
10 locomotives and tenders, $8,000........ 
24 passenger cars.2,500, 
6 baggage cars.1,200, 
20 cattle cars.....600, 
40 freight cars.800. 
15 gravel cars.500. 
10 hand cars.100, 
$80,000 
60,000 
7,200 
12,000 
32,000 
7,500 
1,000 
Cost of locomotives and cars 
$199,700 
