COST OF CONSTRUCTION. 
69 
Section 7 .—From summit near Leroux’s Spring to Aztec Pass, 87 miles. 
GRADUATION, MASONRY, ETC. 
Earthwork, 4,105,851 cubic yards, at 15 cents. $615,878 
Rock-cutting, 1,878,709 cubic yards, at $1. 1,878,709 
Masonry, 24,000 cubic yards, at $4. 96,000 
Bridging, 900 feet, at $30... 27,000 
Grubbing and clearing, 80 miles, at $200. 16,000 
Ballasting, 7 miles, at $1,000. 7,000 
2,640,587 
Add 100 per cent, for increase over eastern prices. 2,640,587 
Amount for graduation, masonry &c... $5,281,174 
SUPERSTRUCTURE. 
Cross-ties, for 87 miles, at $1,200 per mile. 104,400 
Railroad iron—75 pounds per yard—delivered at Mojave village, 
on Rio Colorado, for single track and sidings, for 87 miles, 
12,632.4 tons, at $110 per ton. 1,389,564 
Transportation of same, 148 miles, at 5 cents per ton per mile... 93,480 
Wrought-iron chairs and spikes, for 87 miles, at $800 per mile... 69,600 
Distributing and placing cross-ties and rails, 87 miles, at $1,500 
per mile. 130,500 
Amount for superstructure. . . 1,787,544 
EQUIPMENT. 
Locomotives, 10, at $10,500. 105,000 
Passenger cars, 9, at $3,100... 27,900 
Baggage cars, 2, at $1,600. 3,200 
Freight cars, 148, at 1,100... 162,800 
Engine-houses and passenger depots. 90,000 
Way stations for water and wood. 90,000 
Amount for equipment. 478,900 
7,547,618 
For engineering and contingencies, add 10 per cent.;•. 754,762 
Amount. 8,302,380 
Average cost per mile. 95,200 
