Table 3 (Continued)
Date(
Construction and Rehabilitation History
jetties were not (and will not be) maintained and had settled below
1920
the water surface, up to several feet in places. The majority of
maintenance work consisted of placing willows and riprap stone bal-
(cont.
last on the jetties (inner jetties are implied throughout the bulk of
work). The average annual cost for maintaining the jetties during
this period was ,000. The maintained lengths of the east and west
jetties were 11,170 and 4,710 ft, respectively.
The outer 4,525-ft length of the east jetty was protected by con-
1921
struction of a heavy stone breakwater at a total cost of 8,000.
Additional jetty maintenance was done at a cost of ,000.
About 6,500 ft of the landward end of the east jetty was capped with
1926
concrete during 1922-1923. Sections of the east jetty were repaired
using riprap stone capped with concrete during 1924-1926. This work
and other minor repairs averaged ,200 in annual costs.
A 5,200-ft-long longitudinal dike (willow brush and stone) was con-
east of, and parallel to, an equal landward segment
structed 500
of the east jetty. The purpose of the dike and other features was to
halt continued erosion at the landward end of the east jetty, create
a permanent bank (formed by natural deposits) along the seaside of
the jetty, and eliminate future maintenance. During 1928, other
major work consisted of raising the outer 4,000 ft of east jetty up
to grade with "large riprap stone" and repairing 3,000
of concrete
cap by adding concrete and small riprap stone. Total maintenance
cost during this period was 3,000.
The outer 4,300 ft of east jetty was capped with concrete to an
ft. The existing stone was reset prior to placing
elevation of
the 3-ft-wide cap. Additional repairs to the longitudinal dike
brought the total cost for this period to ,000.
No major work was undertaken. The annual cost for continued
maintenance of the (inner) jetties and dike averaged ,000.
1938
the seaward 5,440
In
of east jetty was repaired with
10,930 tons of stone and 4,420 cu yd of reinforced concrete cap at a
total cost of 9,600. The cap was 8 ft wide with a top elevation
In 1940 the outer 4,300
of the
of
mean gulf level
5,400-ft-long east dike was repaired with willows and stone, and the
outer 2,700 ft of the west jetty was rebuilt with creosoted piles,
brush, and stone. Total cost of the repairs was ,700. In 1941
the seaward end of the east jetty was repaired with 1,140 tons of
stone at a cost of ,600. In 1949 the west jetty was repaired by
construction of a treated timber piling curtain wall and stone dike
at a total cost of ,400.
(Continued)
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