Table 17
Newburyport Harbor Jetties
Newburypost, Mass.
Date(
Construction and Rehabilitation History
Two rubble-mound jetties were constructed at the mouth of the
mack River. The north and south jetties were 4,118 and 2,445 ft
1899
long, respectively, and built up to an elevation of +12 ft mlw with a
Width.
Minor repairs were made on the north jetty using 640 tons of stone.
1902
The south jetty was repaired in 1905 with 850 tons of stone. During
a total of 19,800 tons of stone was used in repairing the
1909
north jetty. Repair costs during this period totaled ,730.
The north and south jetties were repaired with 7,140 and 1,750 tons
1918
of stone, respectively. Total costs were ,400.
The north jetty was repaired with 1,600 tons of stone at a cost of
1925
,600.
The jetties were repaired at a cost of ,400 for placing 1,190 tons
1933
of stone.
Repairs were made to the north and south jetties for a total cost of
3,700 using 29,930 and 7,810 tons of stone, respectively.
1938
An inspection showed both jetties were in poor condition.
1963
Extensive repairs were made to 2,920- and 1,095-ft-long sections of
the north and south jetties. The repaired sections would best define
1970
completed were 700
ft of revetment adjacent to, and landward of,
the south jetty repairs. The north jetty repairs started from its
and continued to the existing sea-
reconstructed landward end at
The south jetty repairs started from its recon-
ward end at
started again at
structed landward end at
stopped at
and continued to its reconstructed seaward end at
An
was not repaired.
undetermined length of south jetty seaward of
Seaward of
both jetties were built up to +12 ft mlw with a 15-ft
on channel and sea sides,
crown width and slopes of
and
side slopes, a crown width of 5 ft, and maximum crown elevations of
ft mlw on the north and south jetties, respectively. The
and
stone size varied from a minimum of 0.5 tons at the landward ends to
quantity of
a maximum of 12 tons at the seaward ends. The
(Continued)
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