Table 17
Jones Inlet Jetty
Jones Beach State Park, New York
New York District
Date(
Construction and Rehabilitation History
1959
A 5,200-ft-long jetty was constructed t o provide inlet stabilization,
and a sand barrier was constructed to prevent shoaling of the inlet
was 1,150
in length and had a crown
ward section (Section
and side slopes of
width of 6.0
Minimum capstone sizes
were 5.0 tons, and core stone was 10 lb to 3.0 tons. Section 2 was
3,650 ft long and had a crown width of 8.0 ft and side slopes of
except the shoreward 1,850
on the western side, which was
Minimum capstone used was 5.0 tons, and core stone was
to 4.0 tons. Section was 350
15
long and had a crown width
Capstone used was 8.0 ton mini-
of 12.0 ft and side slopes of
mum, and core stone was 15 lb to 5.0 ton. Section
the most sea-
and had a crown width of 15 ft and side
ward section, was 50
Stone sizes were the same as those in Section 3 .
slopes of
mlw. The jetty rested on a 2.0-ft-
All crest elevations were
west from the base of Sections 1
thick blanket that extended 20
ft from both sides of the base of Section 3,
and 2 and extended
except for 125 ft on the seaward west side. A 2.0-ft-thick apron
extended 100 ft from the toe and curved to intersect the blanket in
Section 3 . The useful life of the jetty was expected to be 20 years.
The Middle Atlantic coastal storm of 6-8 March 1962 damaged the
1962
was raveled and broken down to the high
jetty. The outer 200
water level. A second layer of capstone was added to the outer
120 ft to restore the original design. The adjacent 1,080 ft shore-
ward was repaired by replacing armor stone and by adding stone.
Armor stone was replaced on the adjacent
ft shoreward.
The jetty had nearly reached impoundment. Sand was bypassing the
1985
jetty, mostly through large voids at the jetty-shoreline intersec-
tion. The apron had settled approximately 7.0
at the seaward end
due to sand loss through voids in the apron.
No further repair or maintenance information has been found.
1986
41
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