Table 13
Wells Harbor Jetties
Wells Harbor, Maine
Date(
Construction and Rehabilitation History
1961-
Two rubble-mound jetties were constructed to protect the 8-ft-deep
1962
channel to Wells Harbor. The north and south jetties, 5 0 and 920 ft
8
long, respectively, converged at approximately a right angle to a
where the north jetty terminated and the 340-ft
distance of 420
Design crown elevations varied from +13 ft mlw at the jetties' sea-
ward ends to +17 and +16 mlw at the landward ends of the north and
south jetties, respectively. Crown widths were 5 and ft along
landward and seaward jetty sections, respectively. Specified side
slopes were
A
bedding layer and core of 3-in. to
150-lb stone was covered with a double layer of stone weighing a
minimum of 2 and 3 tons on landward and seaward sections,
respectively. The cost for placing 20,000 tons of stone was ,600.
1962-
The north jetty was extended 200 ft seaward, and 100 ft of stone wave
absorber was placed on the landward, channel side of the south jetty.
1963
Additional work included placing 650
of stone revetment and fill
material at the south jetty's landward end. The north jetty extension,
constructed parallel to the south jetty's seaward leg, had a
ft
mlw crown elevation, an 8-ft crest width, and
side slope ( F i g -
inset). The section consisted of a core and 1.5-ft- thick
bedding layer of 0- to 700-lb stone, followed by a 2-ft-thick under-
layer of 1,000- to 2,000-lb stone, and covered with a layer of 5- to
7-ton stone. The south jetty wave absorber was 5 ft thick, had a top
elevation of +14 ft mlw, and a
side slope. A double layer of
1- to 2-ton (minimum) stone placed on a 1.5-ft-thick bedding layer of
0- to 200-lb stone comprised the wave absorption material. The jetty
extension cost ,600 using 3,800 tons of stone, while the costs of
the revetment, wave absorber, and fill material amounted to ,400.
1966
The north and south jetties were extended seaward 1,225 and
ft,
respectively. Extensions were parallel to one another, spaced 425 ft
consisted of a +16
crown elevation, a 12-ft crown width, and
side slopes. The section was built up on a 1.5-ft-thick
bedding layer of 1- to 50-lb stone, followed by a core of 1 - to
underlayer of 0.4- to 1-ton
stone, followed by a
to 6-ton stone. The
stone, and covered with a layer of
long jetty heads required
side slopes, a 5-ft-thick underlayer
of 0.5- to 2-ton stone, and two layers of 8- to 12-ton cover stone.
A total of 119,000 tons of stone was placed at a cost of 4,600.
Visual inspections indicate the jetties were in good to excellent
1968-
1985
condition.
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