Table 48 (Concluded) 



Date(s) Construction and Rehabilitation History 



1962 a crown elevation of +4.0 ft mlw, with a 2.0-ft crown width, except 

 (Cont.) the seaward 70 ft of the north jetty was 4.0 ft. The side slopes 



were 1V:2H. The landward end of the north jetty was extended 120 ft. 

 Voids along the remainder of the jetties were repaired by placing and 

 resetting existing stone at existing section elevations. The depth 

 at the toes of the jetties ranged from 10.0 to 12.0 ft mlw. 



1981 A survey report indicates both jetties are in "poor" condition. The 

 seaward end of the north jetty and the landward ends of both jetties 

 were flanked, and there were numerous areas of subsidence along their 

 lengths. It is believed that scour is the reason for their 

 deterioration for the following reasons: 



— Existence of a homogeneous cross section (no smaller core placed). 



— No bedding stone or apron stone being placed during original 

 construction or during repairs. 



— Increase in depth from a range of 5.0 to 6.0 ft to a range of 10.0 

 to 12.0 ft mlw at the seaward ends. 



— Landward ends of the jetties being flanked at present. Each has 

 been flanked once and repaired since original construction. 



— General susidence along the entire lengths of the jetties of 0.5 

 to 1.0 ft. 



— Numerous voids or gaps where capstones were missing. 

 1986 No further repair or maintenance information has been found. 



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