Table 72
Harbor Beach Breakwaters
Harbor Beach, Michigan
Construction and Rehabilitation History
Construction of a 1,204-ft-long north breakwater, a 4,716-ft-long
1885
main breakwater, and a 1,956-ft-long south breakwater (Figure 192)
was completed during this period. The breakwaters were constructed
with stone-filled timber cribs which ranged from 16 to 38 ft in width
The main breakwater was capped with a stone and concrete super-
1909
structure (Figure 193, Cross Sections D-D and E-E). The super-
structure included a parapet that had a crest el of
ft lwd.
The north breakwater was capped with a concrete superstructure (Fig-
1912
The breakwater crest el was
established at
ft
The south breakwater was capped with a concrete superstructure
1917
The crest el of most
of the structure was
ft lwd, but the northern end of the break-
water (Cross-Section F-F) included a parapet with an el of +14 ft
lwd.
Riprap was placed on the lakeside of the main breakwater (Fig-
1919
I was placed on a
t
-)
slope with a crest ranging from about
(Cross Section
ft
to
ft
(Cross Section E- ).
E
1921
Riprap was placed on each side of the south breakwater (Figure 193,
Cross Sections F-F through
The crest of the riprap on the
lakeside was
ft lwd, and on the harbor side it was at an el of
ft lwd.
Riprap was placed on the lakeside of a portion of the north break-
1926
water (Figure 193, Cross Section
to an el of about
ft lwd.
1966
Rehabilitation of the south end of the main breakwater (Figure 192,
Cross Section E-E) was performed. Work consisted of replenishing
stone fill and repairing cracks in the substructures. Cost of the
repairs was about 2,000.
Rehabilitation of portions of the south breakwater (Figure 192, Cross
1971
Sections F-F through
was completed. Riprap protection which
included a total of approximately 38,500 tons of stone (ranging from
6 t o 15 tons each) was performed for about 6,000.
1975
Riprap was replenished along portions of the main breakwater.
(Continued)
294
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