Daily Davenport Democrat. [volume] (Davenport, Iowa) 1864-1874, 1867-11-25

Tns ST. Louis BRiDos. bridge pro-
posed to be built By the Illinois and s..
Louis Bridge Company, 10. according 10 the
plan. located between Wash and Carr
streets, and consists Of 81 spans, including
one span Of l6O feet, With two trusses for
highway travel across Cahokia Cresk-the
eastern terminus Of the Bridge Company's
line:
Commencing on the East 81. Louis Lsvse
there will be spans Of ga feet and two
spans Of 86A feet over the st. Louis Levee
one span Of pa feet. and over the block
from the Levee to Main street one span Of
pa feet. These nine spans have four a.
trusses each, with . sidewalk Of 8 feet in
width on each side. The railroad traffic
will pass between the centre trusses which
have four rails to accommodate the differ
ent gau % of the railroads centesing ct East
st. Louis and this city. The carrisge ways
are between the outside and centre truss
which will accommodate tho bighwsy and
street railway traffic. They are Of sufficient
capacity 10 accommodate four carriages or
teams abreast over the bridge. which gives
ample room for passing. Carrisges run
upon iron trains. All of tho trusses are oil
sufficient strength 10 adm, IL both railroad
ann highway traffic through each passage
The suos,rueture consists OF thirty piers
and abu,ncnts Piers No. /, 2, and 4
from the East st. Louis side. consist Of fou.
pncuma' lie piles-ons under each truss s
leet in diameter, driven from AZ 10 GO fee,
below low water Of 1868, which is below
any POS ,ible scaur of the river, and runnln z
up 10 the h,idge seat. They have an ex
banded base of q feet, and the concrete,
with which all u the piles are filed, Is ex-
panied three feet beyond the b.se
u the pile, giving base Of con-
crete Of - feet and 3 feet deep
The ic breakers consist Of two pneum attic
piles OF ieet in diameter, driven to an Az.
have an expanded base Of feet, and Of cor
crete Of Il feet; on top Of these plies there
is an iron column, at an angle Of SO de-
erees, covered with wrought iron. which
has a sharp edge 10 split the ice and to pre-
tect the piers from food wood, &c
Piers No. and 6, which support the 364
feet spans, are to 10 10 fees in diameter,
and driven to the rock. No. ) is &c feet be-
low low wafer. They have ice breakers
similar to the piers already described. All
are filed with concrete aod are firmly
struted and b;aced together with wrought
iron.
Pier No. Z, and all the balance OF the
piers md ahutments, arc to be Of stone ma
sonry.
Pier No. S, which is eituatcd at the side
walk OF the levee, and the abutinent on the
East 5. Louis sife are provided with stair
ways on each side, so that pedestrians can
reach the sidewalks Of the bridge by them
Is vel as from the approaches at each end
Of the bridge.
The entire length Of the superstructure
is ., ITO feet; Of the approaches 1856 feet
= total Of s,7a5 feet The quantity Of
material necessary in the work will build
| 0,l02 feet Of superstructuIe Of the same
plan. and TO- 600 feet Of EN- bankment Of the
same average, depth and width for a single
track railroad, or. altogether nearly four
miles.
The bridge IS 70 fee. wide from outside
to outside Of sidewalks, and the land under
meath the bridge. from Leves to Second st..
1t Carr, can be improved with buildings SO
It will pay ten per cent on its cost
The cost Of the structure will BE- sc, OOO..
600.