Table 2 (Continued) 



Date(s) Construction and Rehabilitation History 



1944 North jetty repairs using 10,840 cu yd of concrete and south jetty 

 repairs using 1,502 cu yd of concrete were completed at a cost of 

 $56,740. 



1945 South jetty repairs using 3,342 cu yd of concrete were completed 

 for $50,560. 



1950 The south jetty was breached over a 70-ft span on the sea side. 

 Side slopes were reconstructed with mass concrete to conform to 

 existing adjacent slopes to el of +18 ft mllw. 



1951 South jetty repairs using 1,081 cu yd of concrete were completed at 

 a cost of $59,805. Also, twelve 100- ton concrete blocks were 

 installed. 



1952 South jetty repairs using 470 cu yd of concrete were completed at a 

 cost of $12,107. 



1957 Major damage was sustained on the channel side of the north jetty. 

 The total length of damage on the jetty was 410 lin ft at five 

 locations. Also, the concrete monolith at the outer end of the 

 structure was completely devoid of stone or concrete protective 

 side slopes at this time. Major damage to the south jetty had 

 similarly occurred. Breaches through the center section had oc- 

 curred at two locations with major loss of side slopes at three 

 locations. The concrete monolith at the outer end was exposed in a 

 manner similar to that of the north jetty. The condition of the 

 jetties at this point was not due to a specific storm but repre- 

 sented deterioration over a period of years. Tetrapods weighing 



25 tons were placed on the north jetty and 15 tons on the south 

 jetty, all on a slope of 1V:1.5H. North jetty repairs using 

 611 cu yd of concrete and 1,540 tons of stone were completed for 

 $100,418. 



1957- Severe winter storms deteriorated the north and south jetties to 



1958 such an extent that repair work constituted a major construction 

 project. 



1958 Mass concrete was poured to fill eroded areas on crests, and armor 

 stones were replaced in areas that were breached and washed out. 

 Concrete blocks (11 by 11 ft) weighing 100 tons and 12-ton tetra- 

 hedrons were placed on the heads of both jetties. 



1959 Major side slope losses on the south sides of both the north and 

 south jetties occurred. 



1960- Rehabilitation of both jetties was accomplished. Jetty trunks were 

 1963 repaired with 12-ton stones placed on 1V:1.5H slopes in the eroded 

 areas. Jetty heads were reconstructed using 20-ton blocks to form 

 head perimeters, and centers were filled with mass concrete. 

 Two-hundred and fifty 100- ton concrete blocks were placed around 

 the seaward tip of the south jetty head. The concrete monolith at 



(Continued) 



