PART 11: SUMMARY OF CORPS BREAKWATER AND JETTY STRUCTURES IN NAD
3 . NAD has 58 projects which contain breakwater and/or jetty structures
that are located in four coastal districts as follows: New York (NAN), 21;
Philadelphia (NAP), 17; Baltimore (NAB), 16; and Norfolk (NAO), 4 Case
.
histories for these structures are included in Tables 1-58 which are ordered
according to the preceding districts and coastal location. Twelve of the
projects are located in an ocean environment, and the remainder are situated
lin
in bays, sounds, or rivers. Overall, there are approximately
of breakwaters (22.6 percent) and jetties (77.4 percent). Most of the struc-
tures' cross sections are rubble mound (73.1 percent) or stone-filled timber
crib (10.4 percent). Other construction materials that have been used include
steel (Wilmington Harbor and Indian River Inlet), dolosse (Manasquan Inlet),
and Ocean City Inlet), concrete block (Cold
concrete cap (Manasquan
Spring Inlet), and timber (Double Creek, Little Wicomico River, and Urbanna
Creek). Thirty-three of the project structures have been repaired since
construction.
Figures 1 through are maps of NAN, NAP, NAB, AND NAO, respectively,
showing project locations. Pertinent summary information on each project is
presented in the following listing.
*
A table of factors for converting non-SI units of measurement to SI
(metric) units is presented on page 3.
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