Table 27 



Port Orford 



Port Orford, Oregon 



Date(s) Construction and Rehabilitation History 



1935 Local interests built a combined breakwater-pier of piling, concrete, 

 and stone. The breakwater was rebuilt three times between 1935 and 

 1965 due to damage from winter storms. 



1965 An extension to the breakwater was authorized. 



1968 The breakwater extension was constructed. The extension was 550 ft 

 long with crest elevation of +20 ft mllw and crest width of 30 ft. 

 Side slopes were 1:1.5 on the harbor side and on the ocean side below 

 mlw and 1:2 on the ocean side above mlw. The project required an 

 estimated 79,000 tons of stone as well as 11,000-16,000 tons for the 

 bedding layer. Fifty-eight percent of the stone was class "A" (9 to 

 15 tons and averaging 12 tons). Twenty-two percent of the stone was 

 class "C" (weighing a minimum of 1,000 lb and averaging 1 ton). The 

 remainder of the stone was class "B" (weighing a minimum of 2 tons 

 and averaging 6 tons). The design wave was the 10 percent wave, 

 estimated at 22 ft. 



1985 The harbor and cross section of the breakwater are illustrated in 

 Figure 58. No repairs or rehabilitation are reported. 



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