AMERICAN SOCIETY OF CIVIL ENGINEERS

INSTITUTED 1852


TRANSACTIONS

Paper No. 1159


THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD.

THE EAST RIVER TUNNELS.[A]

BY JAMES H. BRACE, FRANCIS MASON, AND S. H. WOODARD, MEMBERS, AM. SOC.
C. E.


This paper will be limited to a consideration of the construction of the
tunnels, the broader questions of design, etc., having already been
considered in papers by Brig.-Gen. Charles W. Raymond, M. Am. Soc. C.
E., and Alfred Noble, Past-President, Am. Soc. C. E.

The location of the section of the work to be considered here is shown
on Plate XIII of Mr. Noble's paper. There are two permanent shafts on
each side of the East River and four single cast-iron tube tunnels, each
about 6,000 ft. long, and consisting of 3,900 ft. between shafts under
the river, and 2,000 ft. in Long Island City, mostly under the depot and
passenger yard of the Long Island Railroad. This tube-tunnel work was
naturally a single job. The contract for its construction was let to S.