Table 65
Alpena Harbor Breakwater
Alpena Harbor, Michigan
Construction and Rehabilitation History
1939
from the shore extending parallel to the entrance channel.
The project was modified, which entailed removal of the existing
1965
breakwater and construction of a new 550-ft-long offshore rubble
breakwater. The new structure would include an 8-ft crest width,
cover stone, a crest el of
ft lwd, and
side slopes
on the harbor side with
side slopes on the lakeside
The 1965 modification to the project was reclassified into an in-
1969
active status based on an unfavorable benefit-to-cost ratio.
The existing breakwater has never undergone maintenance during its
1986
lifetime and is considered presently to be in good condition.
VICINITY
(NOT CONSTRUCTED)
Figure 178. Alpena Harbor, Michigan
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