Table 67
Au Sable Harbor Jetties
Au Sable, Michigan
Date
Construction and Rehabilitation History
Construction of north and south jetties (Figure 181) was completed.
1962
The shoreward 980 ft of the north jetty and 1,000 ft of the south
jetty were constructed with steel sheetpiling at a crest el of
ft lwd (Figure 182). The lakeward 227 ft of the north jetty and
200 ft of the south jetty were constructed with 27.2-ft diameter
steel sheet-pile cells. The cells were stone filled and capped with
concrete to an el of
ft lwd (Figure 182). Riprap was placed on
each side of the cellular portions of the breakwater (Figure 182) and
along some portions of the steel sheet-pile structures (Figure 181).
Rehabilitation of the north and south jetties was completed for a
1975
cost of about 2,000. This work included repairs for broken and
sunken cell caps 'and replenishment of riprap in various areas.
An inspection of the jetties revealed them to be in very good con-
1984
dition. An aerial view of the Au Sable Harbor jetties is shown in
Figure 183.
Figure 181. Au Sable Harbor, Michigan
280
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