Table 30
Manitowoc Harbor Breakwaters
Manitowoc, Wisconsin
Construction and Rehabilitation History
Date
Construction of the lakeward 800-ft portion of the north breakwater
1895
was completed. The breakwater con-
(Figure 75, Sections C and
sisted of stone-filled timber crib construction (Figure 76, Sec-
tions C and
Riprap toe protection was included around the base
of the structure.
The shoreward 1,740-ft portion of the north breakwater and the entire
1910
2,290-ft south breakwater were constructed during this time (Fig-
ure 75, Sections A , B, E, F, and
The shoreward 1,450- and
1,200-ft lengths of the north and south breakwaters, respectively,
(Figures 75 and 76, Sections A and E) were constructed of wood piles
and were 14 ft in width. The adjacent 290-ft lengths of breakwater
extending lakeward on each structure (Figures 75 and 76, Section B)
were constructed of stone and concrete and were also 14 ft in width.
The remaining 800 ft of the south breakwater was built of timber
cribs filled with stone (Figures 75 and 76, Sections F and
They
were 2 4 ft in width. Riprap was placed along each side of the struc-
tures for toe protection.
The 100-ft-long north breakwater head (Figures 75 and 76, Section D
)
1918
was capped with a concrete superstructure. The elevation of the
ft lwd.
breakwater was
The shoreward 1,450-ft-long portion of the north breakwater (Fig-
1924
ures 75 and 76, Section A) was capped with a stone and concrete
superstructure. The total width of the cap was 17 ft, and the crest
ft lwd.
el was
The shoreward 1,200-ft-long portion of the south breakwater (Fig-
1925
ures 75 and 76, Section E was capped with a stone and concrete
)
superstructure. The total width of the cap was 15 ft, and the crest
ft lwd.
el was
A 700-ft-long portion of the north breakwater (Figures 75 and 76,
1926
Section C , and the lakeward 800 ft of the south breakwater (Fig-
)
ures 75 and 76, Sections F and
were capped with stone and con-
crete superstructures. The structures were 24 ft in width with crest
ft lwd.
els of
The 290-ft-long trunk portions of the north
south breakwater
(Figures 75 and 76, Section B) were capped with concrete super-
1934
structures with
ft lwd crest els.
(Continued)
125
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