DOCUMENTARY HISTORY OF THE FLORIDA CANAL


289


 A 30-foot sea-level canal is estimated to cost $146,160,000.' In the estimates
of cost are included figures for the purchase of right-of-way amounting to
$2,411,000 for the lock canal and $3,000,000 for the sea-level canal. On Federal
projects of this nature it is customary for local interests to furnish such a
right-of-way free of cost to the United States, and the board of review is of
the opinion that if the construction of the canal is authorized a condition
precedent to beginning work should be that local interests should furnish as-
surances satisfactory to the Secretary of War that suitable rights-of-way, flow-
age rights, and disposal areas for dredging will be furnished free of cost to
the United States when and if required.
 It is felt that under present conditions alterations to bridges are charges
which properly may be borne by the United States. Any other arrangement
would indefinitely postpone the commencement of the work.
 Deducting the estimated costs for rights-of-way and disposal areas, the esti-
mated costs of construction for the 35-foot sea-level canal become $172,000,000
and for the 30-foot sea-level canal become $142,709,000, both exclusive of
interest.
 Justifable expenditures.-This board was not instructed to estimate the
benefits accruing from the construction and operation of this canal. However,
if it be assumed that the economic study made by the special board of Army
engineers for a lock canal is sound, and considering the lower maintenance
and operating costs of a sea-level canal, the cost of a canal which would be
justified at 4-percent interest would be:


Sea-level canal:
 30-foot depth
 35-foot depth
Lock canal:
 30-foot depth
 35-foot depth


$160,000,000
177, 000,000

141,000,000
157,000,000


 DIanMBa 30, 1933.

TAm, 1.-Florida Atlantic-Gulf ship canal, estimate of cost

 85-FOOT LOCK CANAL (SPECIAL ARMY BOARD)


Section


Bottom
width


Classification of materials


Quantity of
materials


- I I I .1


1--
2......
3......
4-.....


4A .... 4A-....

-....... 5 ......


Fee
 400
 400
 400
20-400

 250


Rock......--..o.- -------..-...
Earth, wet....--..................
--.--do----------- --------- ---
--...do .............................
Rock .....-.......................
Earth, wet --....................
Earth, dry.....------------
Rock..........................
Earth, wet.--.....................
Earth, dry.....------------
Rock.......................---
Earth, wet........-...............
Earth, dry....- ------------


S--...... 00-1, 000 Rock..............................
 Earth, wet....---------
Total excavation in canal prism........-------
Purchase of land.---.......--------------- --.
Clearing and rubbin..........................
Locks and auxiliary works (3 sets)---------.............
Watr-spply work.......................--.........---
B (10)...........................................
F 5 ) -. .--- - - - - ---.. . . . . . . . . . . . . . .
Aid to tion....................................--------------
Turning basins (4).........-----.............------------------------.....
Highway and railway relocation............--.........----


Cubic guards
 2,44, 000
 12,176,000
114,827, 000
111,802,000
58,200, 000
61,667, 00
62,000,000
 3,449, 000
 20,754,000
 5,008,000
 24,932,000
 4,600,000
 2,743,000
 34 854000
 1, 886, 000


$O. 80
 .07
 .07
 .07
 .55
 .07
 .13
 .55
 .07
 .13
 .55
 .07
 .13
 .80
 .07


17-..... Net construction cost.......................---. -- ............
18...... Engineering, supervison, and contingencies, 15 percent. ....................
19...... Total ost, exclusive of nterestduring construction. ...... .....
......Cot, exclusive of ost of land and flowage damages.-----........ ........
1-.. Cot, exclusive of cost of land and flowage damages and .......................
 certain bridges.


Total cost


$1,957,000
 852,000
 8.024,000
 7,832, 000
32, 065, 000
4,317,000
6,760,000
1, 732, 000
1,453,000
 768,000
13,713,000
 322.000
 357,000
27,720, 000
1,112,000


10, 984,000
2, 585.000
2,825 000
50, 060,000
 5800,000
 9, 97, 000
 125, 00
 1,350,000
 2, 56,000
 997,000

180 907,000
27,136a,00

208,43, 000
205,127,750
199,481, 250


* or details see table 6 herewith.


-.......

7----
8----
9---
10-......--
11---......
12......
14.
15.j
16.------


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