Table 28
Two Mile Breakwater
Two Mile, Florida, SAM
Date
Construction and Rehabilitation History
1976
Two breakwaters retaining dredged materials were constructed on
either side of the entrance channel to Two Mile Channel (Figures 43
and 45). The breakwaters were constructed parallel to, and 465 ft
seaward of, the Two Mile Channel centerline. Prior to construction,
ft and -2 to
elevations from - 2 to
ft existed on the east and
west sides, respectively. These areas had been built up from the
material obtained from dredging of the existing channels. Both
L-shaped breakwaters had
sections facing the entrance
and
sections on the east and west
channel and
sides, respectively, parallel to Two Mile Channel. The design sec-
tion was to be built to
ft mlw with a 30-ft crown width and
I
side slopes. Because of the nature of the dredged
rial, construction dikes were
around the periphery to retain
the dredged material, allowing excess water drainage and material
consolidation. The construction dikes were built up from adjacent
bottom material to a cross-section elevation of
ft mlw, a crown
above
ft mlw and
width of 5 ft, and side slopes of
below. After completion of the breakwaters, the construction dikes
were left in place, and the side slopes facing the entrance channel
were revetted with filter fabric and rubble stone.
The outer ends of the two breakwaters had been eroding and were
1982
revetted with stone left over from the original construction.
1985
The breakwaters are presently in good condition.
81
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