Table 7 



South and North Jetties, Manasquan Inlet 



Point Pleasant, New Jersey 



NAD, NAP 



Date(s) Construction and Rehabilitation History 



1980 Inlet opened and sand-filled timber jetties constructed out to 

 120 ft beyond low-water line (not model tested) . 



1981-1887 No maintenance carried out and by 1887 inlet totally blocked by 

 sand. 



1899 Repair of north jetty. 



1930 Construction of 1,900 lin ft of steel sheet-pile bulkheads, 



1,230-ft north jetty, and 1,030-ft south jetty. Both jetties 

 rubble-mound structures. 



1931-1979 Jetties rehabilitated nine times with progressively larger stone 

 (none model tested). Last effort used 12-ton stone. 



1980 Rehabilitation of south jetty (not model tested); 680 16-ton 



steel-reinforced dolosse placed on outer 400 ft of channel-side 

 slope, around the head, and 50 ft of beach-side slope. Dolosse 

 placed from toe to crown with a concentration of 23 dolosse per 

 1,000 sq ft of surface area. First layer of dolosse placed 

 with the vertical fluke downslope and random placement used in 

 second layer. 



1984 Rehabilitation of north jetty (not model tested) using 646 16-ton 

 steel-reinforced dolosse placed on head and sea-side slope of 

 trunk. 



NOTE: Design Storm Conditions. 13-sec, 25-ft breaking waves (l-in-50-year 

 occurrence) . 



Maximum Storm Condition Exposure. During March 1984 21-ft waves 

 measured in 50-ft depth; condition assumed to have produced design 

 wave heights at the structure. 



