Construction and Rehabilitation History
Rehabilitation of 1,000 ft of the protective riprap slope on the
lakeside of the west breakwater (Figures 226 and 227) was performed.
Portions of the west breakwater were rehabilitated (Figure 229). The
was restored to its original height, and new armor stone
was installed along the lakeside of the riprap slope. The eastern
east breakwater was in poor condition during a site
Rehabilitation of 4,400 ft of the eastern end of the east breakwater
was performed using 29,700 two-ton unrein-
concrete armor units. Two layers of dolosse were placed
on the lakeside of the trunk and around the head using a placement
density of 1.61 dolosse per 25
ft of breakwater. The slope was
Model tests were not conducted prior to installation of the
head of the east breakwater following a storm in April
was completed using 200 two-ton unreinforced dolosse.
Model tests were conducted to determine the breakwater modifications
the passage of
necessary a : the west (main) entrance to
ore carriers (Bottin 1983). Breakwater modifications
at Edgewater Marina (adjacent to the west breakwater) for wave pro-
was investigated in the model (Bottin and Acuff 1983).
Many of these units were broken during initial
placement. A concentration of broken dolosse near the top of the
slope at the head was believed to be remnants of those broken during
the 1982 storm. In general, dolosse are generally confined to the
upper third of the structure slope and are at about 2 percent of the
total number placed.
awarded to rehabilitate an additional 3,300 ft of the
dolos rehabilitation). The repairs involved placement of 9- to
20-ton armor-stone mix. Model testing was conducted prior to reha-
(Markle and Dubose 1985).
Repairs have! been extensive at Cleveland Harbor over its lifetime
to the east breakwater). Until recently the structure
in a manner similar to the original construction using
3- to 8-ton stone. Consequently, maintenance on the breakwater dur-
period (1966-1984) involved repairs to about 12,500
ft of breakwater at an expenditure in excess of ,000,000. Since
the latest rehabilitation, the structures are considered to be in
good condition. Aerial photos showing the Cleveland Harbor struc-
tures are presented in Figures 230-233.