Table 28 

 Andrews River Jetties 

 Andrews River, Mass. 



Date(s) Construction and Rehabilitation History 



1967 As part of improvements which included a small-boat harbor, a 600-ft- 

 long rubble-mound jetty was constructed on the east side of the 

 Andrews River mouth (Figure 31). The design cross section (from a 

 detailed project report (DPR) dated May 1 966 ) consisted of a +6 ft 

 mlw crown elevation, a 5-ft crown width, and 1V:1.5H side slopes. 

 The section was to be built on a 1 -ft- thick blanket of 0- to 50-lb 

 stone, followed by a core of 1- to 300-lb sand tight quarry stone, 

 and covered with 400-lb to 1-ton armor stone. Cover stone at the 

 outer end was 1 to 2 tons. A total of 2,750 tons of stone was placed 

 for a total cost of $23,700. 



1973 The 655-ft-long west jetty and 54 ft of wing wall were constructed 

 using a total of 5,280 tons of stone for a total cost of $78,400. 

 The design cross section was probably identical to the east jetty 

 section (based on 1 966 DPR). Stone sizes were similar to the east 

 jetty sizes, except that larger 1- to 2-ton stone was not used at the 

 seaward end. 



1974 Visual inspection indicated the jetties were in excellent condition. 



1981- Yearly visual inspections indicated the jetties were in good 

 1986 condition. 



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