Table 24 



Key West Bight Breakwater 



Key West Harbor, Florida, SAJ 



Date(s) Construction and Rehabilitation History 



1967 An 800-ft-long rubble-mound breakwater was constructed to provide 

 harbor protection (Figure 38) . The design section consisted of 

 1- to 12-in. core stone placed to an elevation of ft mlw and over- 

 layed with 2- to 6-ton capstone. The crest elevation was +6 ft mlw, 

 the crest width was 10 ft, and the side slopes were IV:1.5H. Esti- 

 mated quantities were 15,100 and 18,800 tons for the foundation 

 material and capstone, respectively. The breakwater design used 

 Hudson's formula with an 8-ft wave height. To prevent potential 

 overtopping, the crest elevation was selected based on a 3.2-ft, 

 4-sec wave (nonhurricane design wave) . The cost of the breakwater 

 plus necessary excavation was $471,000. 



1971 A portion of the breakwater was removed to aid in flushing of the 

 harbor. The core stone removed was placed in a blanket 2 ft thick 

 by 15 ft wide extending along one or each side of the breakwater as 

 available stone would permit. The capstone removed was replaced to 

 the existing design with the remainder placed in existing void 

 spaces on the breakwater. The estimated cost of the modification 

 was less than $25,000. 



1985 The breakwater has never been repaired and is presently in good 

 condition. 



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