ESTIMATE OF COST OF ROAD. 
145 
Depot in the vicinity of Great Falls of Missouri. $200,000 
Depot in St. Mary’s valley. 50,000 
Depot near crossing of the Columbia. 50,000 
Depot at Puget sound, with permanent works for a large travel. 1,000,000 
Intermediate stations, with equipments for wood and water conduits and connex¬ 
ions with aqueduct. 1,000,000 
3,000,000 
A detour by Cadotte’s Pass would increase the distance some two or three miles, and the 
tunnel about two miles ; the increased cost would be one and a half millions. 
The line of the Bitter Root would add to the expense as follows : 
Increased length of line, all in difficult country, seven miles, at $100,000 per mile. $700,000 
The line from the forking of the two routes to Vancouver would cost as follows : 
From the forking of the routes to the Dalles, 133 miles, at $50,000 per mile. $6,650,000 
From the Dalles to the plain near Vancouver, 90 miles, at $120,000 per mile.... 10,800,000 
Add for depot buildings at head of navigation of the Columbia, depots looking 
to a connexion with the Willamette and intermediate depots. 250,000 
Total cost to Vancouver, 223 miles. 17,700,000 
From the plain, near Vancouver, to Seattle, on Puget sound, 172 miles, at $40,000 
per mile. 6,8S0,000 
Add for intermediate depots. 150,000 
Total cost to Seattle, 395 miles. 24,730,000 
GENERAL RECAPITULATION. 
Cost of road to Seattle by the Snoqualme Pass, using the long tunnel, 1,890 miles . $105,076,000 
Cost of road to Seattle by the Columbia valley and the Cowlitz river, 2,045 
miles... 112,121,000 
Cost of road to Vancouver, 1,873 miles. 105,091,000 
Entire system, St. Paul to the Columbia, with branches down the Columbia and 
across the Cascades, and a connexion from Seattle direct to the Columbia river, 
2,285 miles, at a cost of.... 129,806,000 
To above add for engineering and contingencies.. 5,000,000 
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