Table 23 

 Mantua Creek Jetties 

 Paulsboro, Mew Jersey 

 Philadelphia District 



Date(s) Construction and Rehabilitation History 



1907 Two jetties were constructed to provide channel protection. Lengths 

 were 754 ft and 580 ft east and west, respectively. The jetties were 

 constructed of stone-filled timber cribs, with mat brush placed to 

 support the stone (Figure 28). Top width and elevation were 12.0 ft 

 and +8.0 ft mlw, respectively, for each jetty. 



1912- The east jetty was extended to 1,577 ft, and the west jetty was 

 1913 extended to 1,456 ft (Figure 28). 



1918 Repairs were made by the addition of stone. 



1962 An investigation of the jetties revealed the jetties had settled an 

 average of 2.0 ft. Approximately 100 ft of the offshore end of the 

 east jetty had deteriorated, with most of the pilings gone, and stone 

 had fallen out to below the waterline. Most of the walings had 

 deteriorated and were missing. Piles were missing at intermediate 

 locations along the jetties, but there was no significant loss of 

 stone at those locations. Piles that remained were in good 

 condition. 



1963 The jetties were rehabilitated at a cost of $136,895. A new row of 

 piles was placed over approximately 100 ft at the offshore ends. 

 Piles were placed 7.5 ft on either side of the center line of the 

 jetties. Corestone was dumped between the piles to an elevation of 

 +8.0 ft mlw (Figure 29). Missing piles were replaced, and new wales 

 were provided along the remainder of the jetties. One row of cap- 

 stone was placed on the inner sides of both cribs on top of the 

 existing stone to +8.0 ft mlw. Core stone was filled between the 

 capstones in the center of the jetties to +8.0 ft mlw (Figure 29). 

 Crown width was 16.0 ft at the offshore ends and 12.0 ft on the re- 

 mainder of the jetty. Design wave height was 4.2 ft. 



1964 Repairs were made to the seaward end of the east jetty at a cost of 

 $4,864. The Corps was reimbursed later for this work. 



1986 No further repair or maintenance information has been found. 



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