The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1888-07-09
WITH A SINGLE SPAN.
The Bridge To BE Built Over the Hudson
River at New York City.

The Bridge To BE Built Over the Hudson
River at New York City.
New York World.
There is great interest taken here in the bill
introduced in both houses of Congress recently
to provide for the construction Of . bridge
across the Hudson river at this city. The bill
seeks to give the authorization of Congress to
James King MacLanahan. Jordan l.. Mott,
Henry Flad, Chas. U. Canda. James Andrews,
Thomas F. Ryan, Gustav Lindeuthal. VIM. F.
bridge with a single span over the entire
river between the established pier lines
at an elevation over the river OF at
least ono hundred and forty feet In
the clear above high water An important stip-
ulation is that mo pier piers or other OBJ
structiops TO navigation shall be placed or built
in the river between said pier lines" Some of
the men whom this bill proposes to give such
valuable privileges are quite we'll known Jor-
dan l.. Mott is the large iron manufacturer of
this city. James King MacLanahan is . wealthy
iron manufacturer of Hollidaysburg and Johns
town, Pa; Henry Flad is president OF the Board
of Public improvements OF the city OF st. Louis,
was intimately connected with Captain Eads in
the construction of the st. Louis bridge, and
was formerly president of the American Society
OF Civil engineers Charles j. Canda
is the vice-president OF the Western
National Bank Of this citv. and was formerly
United States Assistant Treasurer here. James
Andrews is a contractor Of repute. He built
the piers of the ST. Louis bridge and the works
st the jetties of the Mississippi river He is the
successor of Captain Eads in the ship railway
project William F. Skunk 10 a civil engineer
who was formerly chief engineer Of the New
York elevated railroad. Thos. +. Ryan is a
banker of this city. of the firm OF Smith. Oak
man & Ryan. The author and protector or the
proposed bridge is Gustav Lipdenthsl. de Is .
consulting engineer residing in Pittsburg he
built three Of the Pittsburg bridges and large
number of railroad bridges in various parts Of
the country and has been engaged In other i'm
portant engineering works, IL 10 said. He is
member of the Amerisan Society OF Civil EG-
gineers
A drawing of Mr. Liudenthal's bridge shows q
Suspension bridge much resembling to the un-
professional eye the great structure across the
East river, except that there are double cables.
one set below the other. L here Is q double
tower on either side of the Hudson with o single
span suspended from gracefully bending cables.
The length of the middle span is to be 1850 feet
from center to center OF the towers, and tho
length of the end spans ]. 500 feet each, making
q total length. including the anchorages or
nearly G, 500 feet The towers are TO be 500 feet
high will stand mas onry piers 340xl60 feet,
TWENTY-FIVE feet high above high water, with
foundations of rock. the towers will be OF
wrought iron and steel, containing sixteen col
umus each. These columns are TO be composed
of angles and plates. all octagonal IN shape. and
tapering from seven feet in diameter at the base
10 Ave feet at the top The columns are to be
strongly braced together inside with heavy brac-
ing, and outside with lattice filling. The an.
chorages are to be each 320xl80 feet, land 24(
feet high above the watsr-line. The six rail
road tracks pass through tunnel In each
anchorage. The cables to be fifty fee
apart, strongly braced together to resst TIT
| deformine effects Of heavy loads Each cable
| will have . diameter Of four feet The stee
| wires forming the cables are to be inclosed II
| steel envelopes to protect them against To,
| weather. An air space OF two inches 70 to b
| left between the steel envelopes and the wir,
| for the better protection against the heating o
| the sun and to prevent unequal Temperature
| effects The designer says that in ordinar,
travel thu proposed bridge would be strained
| only TO about 10 per cent Of the maximum loa.
| for which it is designed.