DESCRIPTIONS OF BENCH MARKS
 

BOROUGH OF THE BRONX
 

WESTCHESTER COUNTY, N. Y.

B. M. 953,—Third Avenue Bridge. A ^-inch copper bolt leaded vertically in a
semicircular granite block on the northeasterly side of the northeasterly abutment of
the Third Avenue Bridge over the Harlem River The bolt is 3.3 feet westerly from
the easterly side of the abutment, is on line with the easterly curb of Third Avenue,
and about 130 feet south of the south line of East One Hundred and Thirty-third
Street An arrow cut in the abutment points down to the bench mark. (Note 5,
•p. 89.)

Elevation, 8.981 feet.

B. M. 954.—Third Avenue Bridge. A cross (+) cut in the dressed edge on the
northeasterly side of the northeasterly abutment of the Third Avenue Bridge over
the Harlem River. The cross is on the corner of the abutment, is on the westerly
side of the easterly stairway and 3.6 feet above the sidewalk. The letter B is cut
in the abutment below the bench mark.    (Note 15, p, 91.)

Elevation, 12.278 feet.

B. M. 955.—Third Avenue Bridge. A square (b.) cut in the top of the granite
coping below the balustrade on the easterly side of the easterly stairway on The Bronx
side of the Third Avenue Bridge over the Harlem River. The bench mark is about
135 feet south of the south line of East One Hundred and Thirty-third Street, is
3}4 inches from the northeasterly end of the coping and 1.5 feet above the ground.
An arrowhead on the easterly side of the coping points to the bench mark.

Elevation, 10.596 feet.

B. M. 956.—Third Avenue Bridge.    A square  (D)  cut in the top of the north- '
westerly end of the granite base block at the northerly end of the arch on the west¬
erly side of the Third Avenue Bridge over the Harlem River,    The bench mark is
about 50 feet north of the bulkhead on the north side of the Harlem River and the
figure 11.437 is cut in the base block on the easterly side of the point

Elevation, 8.594 feet.

B. M. 957.—Third Avenue Bridge. A square (jx) lettered B. W. S., N. Y., cut
in the top of the northeasterly corner of the granite base block of granite pier on
the easterly side of the northerly approach to the Third Avenue Bridge over the
Harlem River. The bench mark is about 6 feet north of the north side of East
One Hundred and Thirty-third Street and 8 inches above the street

Elevation, 9.461   feet