Construction and Rehabilitation History
slope. The remaining repairs consisted of buttressing the cap with
(cont.) 12-ft-wide bedding and cover stone layers. A 3-ft-wide layer of toe
protection was placed along the outer edge of the repair sections.
Stone sizes were 6 to 8 tons for the cover layer, 200 to 1,000 lb for
the core (placed on seaside of outer section only) and toe protec-
tion, and 0.5 in. to 200 lb for the approximately 3-ft-thick bedding
layer. Cost totaled ,300 using 4,410 tons of stone.
Minor repairs were made at a total cost of ,200. (No details are
Two sections of the south jetty were repaired (Figure
ft-long rubble-mound spur was placed at
on the north
landward side. The south jetty repairs, from sta
consisted of a
mlt crown elevation,
a composite width (including the cap width) of 20 ft and
slopes. A bedding layer of 0.5-in. to 200-lb stone was placed to
ft mlt and extended 26.5
from the jetty center line. Stone
sizes were 6 to 8 tons for the cover layer and 200 to 1,000 lb for
the core and toe protection. The toe protection was placed on a
slope along the outer edge of the cover and bedding layers.
The spur projected landward from the north jetty at a 30-deg angle
and was built to an elevation of
ft mlt, a 5-ft top width, and
side slopes. One-half inch to 200-lb blanket stone were
section adjacent to the jetty. Single
used, except for a
6-ton stones were placed along the crown. The purpose of the spur
was to minimize sand movement over the lower
jetty section that was building a channel side shoal with the
potential for future channel encroachment which would require subse-
quent maintenance dredging.
Except for the more recent repair sections, the jetties are in poor
condition, with many voids under the concrete caps and numerous
cracks in the caps themselves. Jetty rehabilitation has been delayed
pending authorized project improvements which include relocating the
north jetty and channel deepening.