144 ESTIMATE OF COST OF ROAD. 
ESTIMATE. 
S20’ miles; Bhweseuoper wiles. So Lote oman nO oe os ote wien elope eeemt re ote $6,000,000 
From the Bois des Sioux to the crossing of Milk river, a prairie region, the Coteau du 
Missouri having to be surmounted, and some care in the Milk River valley to guard against 
freshets, and in providing for culverts and bridges: 
72 aulles,, Glee HAO) fol gael ee Beis SSE ein OOO SSIS CaS Sod ace $28,480,000 
From the crossing of Milk river to the Snake, (point where the roads down the Columbia and 
to the Snoqualme Pass fork,) a distance of five hundred and fourteen miles, about one hundred 
and fifty miles will involve heavy side-cutting, much of it in rock. The remainder will pass 
over an essentially prairie region, though at times a rolling prairie. This estimate is for the 
line of Lewis and Clark’s Pass, the Jocko and Clark’s Fork rivers. Even in the mountain 
and wooded region, from the entrance to the Mountain Pass to the crossing of the Spokane, a 
distance of three hundred and fifty miles, more than two hundred and fifty miles is along prairie 
or regular river intervale, and less than one hundred miles is on side-hills. 
For the difficult work, I estimate 150 miles, at $100,000 per mile .........-..-- $15,000,000 
Remaining work, 364 miles, ‘at ‘$45,000 per mile_- ~~... oo ee meee ences 16,380,000 
Tunnel at Lewis and Clark’s Pass, (round numbers,) 13,675 feet, at $120 per 
Vinal fOOb es oc ete note ee ey re eee tere ee eee ea eto eee EE eee 1,650,000 
Totalvstes ites aSee eee oe Seth bs ee eae = ARE ee 33,035,000 
From the point of forking of the two roads, to Seattle and Snoqualme Pass, the distance is two 
hundred and forty miles, which may be subdivided as follows: 
Work comparatively light from the Snake to the vicinity of Lake Kitchelus, and from the 
Snoqualme Falls to Seattle. 
Pesles, at $45,000 perme so < 5. oh foc oye 2) face nee eee ee $8,685,000 
Intermediate work, excepting line of tunnel, 40 miles, at $100,000 per mile... ... 4,000,000 
Short tunnel, 4,000 yards, at $375 per yard (round numbers).......----------- 1,500,000 
Long tunnel,.11,840, yards, about. $420 sper ward 02 soe oS eee ie Sel eie 5,000,000 
St.Paul togBoisi des Sioux, 24 0:milesh eee ee pee b eee eee eee eee 6,000,000 
Boisides) Siousxto) crossing ofelVinlkgniver. glee eS ree ore erat ieee ore 28.480,000 
Crossing of Milk river to crossing of Columbia, 706 miles .........-..--------- 41,661,000 
Crossing of Columbia to Seattle, on Puget sound, 240 miles........----..-.--- 17,685,000 
COST OF SPUR-ROADS, RESERVOIRS, AND STEAMERS ON THE COLUMBIA AND MISSOURI RIVERS. 
Spartoadmtor St: Bauli..26 26.4 See asi kes eae ei ee eles eee eine eee $250,000 
Spur-road. to'Porti Union; audidepots 2. Soc eg bs she o-USSke ek CE ee eee 1,000,000 
Reservoirs;aqueducts, and: growth of woods 5.-.6-ls soe eee eee sree 2,000,000 
Spur-road to Fort. Benton... sss). 2 stastceweeei ee om eee eee 1,000,000 
Ieservoir‘and! aqueducts, Grizzly Bear lakes -js---)\-. secs cee cee eteetate 1,000,C00 
Steamers'and depots'on the Missouri\-). 2). =.= 12s ee sere Nee ee eee eeteatatel 2,000,000 
Steamersiand :depots-on’ theiColumbiass e226 oe ctees See oe eee eterna ele 1,000,000 
8,250,000 
DEPOTS AND PERMANENT FIXTURES. 
Depotat St. Palisa wiceinnn cad tise ce eet Renee store ons Se $200,000 
Depot at Little Falls and connexion with Lake Superior. .........-...-------- 150,000 
Depot at general: plateauof the Bois des Sioux... 5 = ee ct. s see 150,000 
Depotiin the vicinity cL Mort Unions ono. cis vase bee ens snes s+ S525 ote 200,000 
EE 
