Construction and Rehabilitation History
ft mlw, with a 2.0-ft crown width, except
a crown elevation of
1962
of the north jetty was 4.0 ft. The side slopes
(Cont.) the seaward 70
The landward end of the north jetty was extended 120 ft.
were
Voids along the remainder of the jetties were repaired by placing and
resetting existing stone at existing section elevations. The depth
at the toes of the jetties ranged from 10.0 to 12.0 ft mlw.
1981
A survey report indicates both jetties are in
condition. The
seaward end of the north jetty and the landward ends of both jetties
were flanked, and there were
areas of subsidence along their
lengths. It is believed that scour is the reason for their
deterioration for the following reasons:
-- Existence of a homogeneous cross section (no smaller core placed).
-- No bedding stone or apron stone being placed during original
construction or during repairs.
-- Increase in depth from a range of 5.0 to 6.0
to a range of 10.0
to 12.0 ft mlw at the seaward ends.
-- Landward ends of the jetties being flanked at present. Each has
been flanked once and repaired since original construction.
--
General susidence along the entire lengths of the jetties of 0.5
t o 1.0 ft.
-- Numerous voids or gaps where capstones were missing.
No further repair or maintenance information has been found.
1986
99
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