The Rock Island Argus. (Rock Island, Ill.) 1877-1885, 1883-04-17
THE NEW BROOKLYN BRIDGE.


with Brooklyn will soon be ready for use.
The New York Sun says: The original
| plan was to bring the cars, vehicles, and
passengers out on the same level II
was changed to the present plan. so that
the switching of the cars at the terminus
| should not interfere with foot passengers
or vehicles. Those who wish to ride in
| the cars will have to mount to the rail
road depot, but the foot passengers win
| enter upon the bridge at the street level
and ascend at a grade of b feet In 100
| feet The cars will run on either side of
the promenade and next to it. The two
| roadwaYs for carriages and trucks, and
| for the most part, will be ON level with
| fhem
The total width of the bridge is 80
feet. There is room for q train of cars
aud two lines of vehicles to pass on each
side Of the foot promenade. The view
from the cars-will not be 80 good as that
from either the foot promenade or the
roadway. Those in carriages will have
an opportunity to look over ssthe railing,
| which ia seven feet four inches high.
Fhesefages of the foot promenade will be
about thirty five feet from the side of the
| bridge. The space under the promenade
will be used for telegraph and telephone
wires,n The contraet for the superstrnct-
ure of tire railway depafs requires that
the work shall be done by May %, and
the prospects are that it viii he finished
on time. The Pullman palace cars and
the rolling stock are already finished.
/ L. is estimated that the time ocehpied bv
Ethe cars in passing from end to end of
the bridgeAwill be four minutes. The
following information about the bridge
is authentic.
sConctruction commenced Jan. 3, 1S
| 10.
Size of New York caisson, 17ax1O2
feet
Size of Brooklyn caisson. 15sx102
feet.
Timber and iron in eassion, 5.253 cubic
yards.
Concrete ip we'll holes, chambers, etc,
g. 669 cubic feet
Weight of New York caisson, about
700 TONS
Weightsof concrete sfIiing. 5000 tons.
New York tower Contains SO ,945 cubic
yards masonry.
Brooklyn tower contains 80 ga cubic
yards masonry.
Length of river span. 1885 feet 6
inches
Length of each land span, $50 feet
1850 feet.
Length of Brooklyn approach, OF
feet
Length of New York approach ,562 |
feet 2 inches.
Total length of bridge, $50 feet
Width of bridge, So feet
Number of cables, 4,
Diameter of each cable, 154 inches.
First wire was run out May 30, 1877.
Cable making really commenced June
II, 1877.
Length of each single wire in cables, 8,
$40 feet.
) Length Of wire 10 four cables. .exclus
i've of wrapping wire Il, 361 miles.
Weight of four cables, inclusive of
wrapping wire, 8, 1894 tons.
Ultimate strength of each cable IL, goo
tons.
Weight of wire. nearly IL feet per
pound.
Each cable contains 5 1896 not twisted,
steel oil-coated wires, closely
wrapped to solid cylinder 15a inches in
diameter
Depth of tower foundation below high
water Brooklyn, AZ feet.
Depth of tower foundation below high
water, New York, 70 feet
Size of towers at high water line, 140x-
50 feet,
Size of towers at roof course, 135x53
feet.
Total height of towers above high wat
er, 278 feet.
Clear height of bridge in center of
river span above high water at 80 degrees
E. So feet.
Height of floor at towers above high
water, 119 feet inches.
Grade of roadway, 81 feet in 100 feet.
Height of towers above roadway 159
feet.
Size of anchorages at base. 129x119
feet.
Size of anchorages at top. 117x104
feet
Height of anchorage, 80 feet front, s5
feet rear.
Weight of each anchor plate, % tons.
Engineer, Colonel w. A. Roebling.