Table 29
Hyannis Harbor Breakwater
Hyannis Harbor, Mass.
Construction and Rehabilitation History
Date s
The breakwater (Figure 32, plan view) was constructed between 1827
1827-
and 1837 and rebuilt between 1 7 and 1882, The inner leg of the
80
breakwater, about 2,250
long, was built by the State of
Massachusetts. The 1,170-ft-long outer leg of the breakwater was
built and maintained by the Federal government. The rebuilt cross-
section had a 10-ft crown width at
mlw and may have been of
cut stone construction since the side slopes were nearly vertical.
Minor repairs were made in 1936.
1950
The outer 1,170-ft-long leg of the breakwater and adjacent 1 ft of
0
state breakwater were repaired with 1- to 6-ton stone. The repair
geometry consisted of a 10-ft crown width at
mlw and
side slopes. A total of 3,224 tons of stone was placed for a cost of
Prior to the repairs, existing crown elevations varied from
ft mlw. The State portion of the breakwater was considered
to
to be in poor condition.
1961
to
The outer leg of the breakwater was repaired from
and
to
(breakwater bend at
seaward end at
The
repair section consisted of an 8-ft crown width at
ft mlw,
side slopes, and 2- to 7-ton armor stone. Before the repairs,
mlw. The repair costs were
crown elevations were from
to
9,800 using a total of 13,588 tons of stone.
Inspections indicated the Federal portion of the breakwater was in
1974
fair condition.
1982-
Yearly visual inspections indicated the breakwater was in good
1986
condition.
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