Table 18
Harbor Breakwater
Marque
Marquette, Michigan
Date
Construction and Rehabilitation History
Construction of the inner 410 ft of the breakwater was completed
1867
(Figures 48 and 49, Sections A and B.
)
The structure was a stone-
filled timber crib breakwater. The inner 260 ft was 20 ft wide, and
the remaining 150 ft was 25 ft wide.
An additional 1,600 ft of breakwater was built during this time. It
1868-
also was a stone-filled timber crib structure and was 30 ft wide
1874
(Figures 48 and 49, Section
1889-
During this period the breakwater was extended an additional 1,000 ft
(Figures 48 and 49, Sections D, E, F, and G. The structure was a
)
1894
stone-filled timber crib breakwater and was 24 ft wide. It was built
on a stone base and included riprap toe protection.
1896-
A concrete cap (superstructure) was added to the 1,600-ft-long break-
water built during 1868-74 (Figures 48 and 49, Section
1904
The crest
ft lwd.
el of the structure was
A concrete cap (superstructure) was installed on the remaining por-
1897-
tion of the breakwater (Figures 48 and 49, Sections A, B, D, E, F,
1905
and G. The superstructure was built to an el of about
ft lwd.
)
Stone was added on the lakeside of the inner 410 ft (Sections A
and B, and on both sides of the 123-ft-long section designated as G
)
(Figures 48 and 4 )
9.
1912-
The breakwater was extended an additional 1,500 ft during this
period. The extension consisted of a rubble-mound structure (Fig-
1918
ures 48 and 49, Section H. The shoreward 500 ft of structure was
)
ft lwd, and the outer 1,000 ft was con-
installed at an el of
structed to a
ft lwd el. The breakwater was constructed of
10-ton armor stone.
Riprap was placed on the lakeside of the 1,600-ft-long breakwater
1920-
originally constructed from 1868-74 (Figure 49, Section C.
)
1923
Rehabilitation of the inner 3,010 ft of the breakwater was completed
1965
for a cost of 5,747.
Stone placement along a 500-ft section of the breakwater (sta
1979
to
was completed. Also the placement of riprap stabilizing
stone at the lakeward structure toe was completed.
The breakwater presently is in very good condition. An aerial view
1986
of Marquette Harbor breakwater is shown in Figure 50.
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