Table 59
Petoskey Harbor Breakwater
Petoskey, Michigan
Construction and Rehabilitation History
Construction of a 600-ft-long portion of the breakwater (Figure 166,
1896
(Sections B and
was completed. This breakwater consisted of
stone-filled timber cribs built on a stone base (Figure 167, Sec-
tions B and C. Part of the breakwater was 26 ft wide (Section B,
)
)
and the remaining portion (Section
was 28 ft wide.
Construction of the 355-ft-long shoreward portion of the breakwater
1897
(Figure 166, Sections D and E) was completed. This portion of the
breakwater was rubble mound with a 10-ft crest width and a
ft
crest el (Figure 167, Sections D and E. A concrete walkway was
)
also installed on its crest.
Construction of the lakeward end of the breakwater (Figure 166,
Section A) was completed. This portion of the breakwater was a
1907
ft-wide stone-filled timber crib built on a stone base (Figure 167,
Section A ) .
The lakeward 895 ft of the breakwater (Figure 166, Sections A , B, and
1930
C was capped with a stone and concrete superstructure. The crest el
)
(Figure 167, Sections A , B, and C.
of the breakwater was
ft
)
The rubble-mound portions of the breakwater (Figure 166, Sections D
1949
and E) were rehabilitated.
The rubble-mound sections of the breakwater (Figure 166, Sections D
1970
and E were rebuilt (including the concrete walkway).
)
Riprap stone (1 to 6 tons) was placed along both sides of the
1973
mound portion of the breakwater (Figure 166, Sections D and E.
)
Riprap stone was placed in areas along both sides of the timber crib
1977
breakwater (Figure 166, Sections A , B, and C.
)
Replenishment of fill stone was performed in the timber cribs (Sec-
1978
tions A , B, and C, and additional riprap was placed along areas of
)
the timber crib breakwater where stone was not placed in 1977. Rip-
rap was also placed along the rubble-mound breakwater (Sections D
and E where washouts and voids existed.
)
A site inspection of the breakwater indicated superstructure tilt,
1985
settlement, cracking, and loss of fill stone along the timber-crib
portion of the structure (Sections A, B, and
which suggests sub-
(Continued)
261
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