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Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 - The New York Tunnel Extension of the Pennsylvania Railroad. - Paper No. 1150 by Charles W. Raymond
page 26 of 44 (59%)
Newark, N. J., adjoining the tracks of the present New York Division of
the Pennsylvania Railroad, and a double-track railroad across the
Hackensack Meadows to the west side of Bergen Hill, a distance of 6.04
miles. The construction is embankment and bridge work, including bridges
across the Pennsylvania, Erie, and Lackawanna Railroads, and the
Hackensack River.

_North River Division._--Chief Engineer, Mr. Charles M. Jacobs.

This Division commences at the west side of Bergen Hill and passes
through the hill in two single-track rock tunnels to a large permanent
shaft at Weehawken, near the west shore of the North River, and thence
eastward a distance of 224 ft. to the Weehawken shield-chamber. It then
passes under the river through two cast-iron, concrete-lined,
single-track tunnels, with outside diameters of 23 ft., to a point under
32d Street, near Eleventh Avenue, in New York City, and thence through
two single-track tunnels of varying cross-section, partly constructed in
cut-and-cover, to the east side of Tenth Avenue. It then passes into the
Station Yard and terminates at the east building line of Ninth Avenue.
The work included the Station Yard excavation and walls from Tenth
Avenue to Ninth Avenue, and the retaining walls and temporary
underpinning of Ninth Avenue. The aggregate length of the line in this
Division is 2.76 miles.

_New York Station and Approaches._--Mr. George Gibbs, Chief Engineer of
Electric Traction and Station Construction.

The Station and its approaches extend from the east line of Tenth Avenue
eastward to points in 32d Street and 33d Street, respectively, 292 ft.
and 502 ft. east of the west line of Seventh Avenue. This Division
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