Table 30 



Manitowoc Harbor Breakwaters 



Manitowoc , Wisconsin 



Date(s) Construction and Rehabilitation History 



1895 Construction of the lakeward 800-ft portion of the north breakwater 

 (Figure 75, Sections C and D) was completed. The breakwater con- 

 sisted of stone-filled timber crib construction (Figure 76, Sec- 

 tions C and D) . Riprap toe protection was included around the base 

 of the structure. 



1907- The shoreward 1,740-ft portion of the north breakwater and the entire 

 1910 2,290-ft south breakwater were constructed during this time (Fig- 

 ure 75, Sections A, B, E, F, and Fl). The shoreward 1,450- and 

 1,200-ft lengths of the north and south breakwaters, respectively, 

 (Figures 75 and 76, Sections A and E) were constructed of wood piles 

 and were 14 ft in width. The adjacent 290-ft lengths of breakwater 

 extending lakeward on each structure (Figures 75 and 76, Section B) 

 were constructed of stone and concrete and were also 14 ft in width. 

 The remaining 800 ft of the south breakwater was built of timber 

 cribs filled with stone (Figures 75 and 76, Sections F and Fl). They 

 were 24 ft in width. Riprap was placed along each side of the struc- 

 tures for toe protection. 



1918 The 100-ft-long north breakwater head (Figures 75 and 76, Section D) 

 was capped with a concrete superstructure. The elevation of the 

 breakwater was +7.1 ft Iwd. 



1924 The shoreward 1 ,450-f t-long portion of the north breakwater (Fig- 

 ures 75 and 76, Section A) was capped with a stone and concrete 

 superstructure. The total width of the cap was 17 ft, and the crest 

 el was +7.1 ft Iwd. 



1925 The shoreward 1 ,200-f t-long portion of the south breakwater (Fig- 

 ures 75 and 76, Section E) was capped with a stone and concrete 

 superstructure. The total v/idth of the cap was 15 ft, and the crest 



el was +7.1 ft Iwd. 



1926 A 700-f t-long portion of the north breakwater (Figures 75 and 76, 

 Section C) , and the lakeward 800 ft of the south breakwater (Fig- 

 ures 75 and 76, Sections F and Fl) were capped with stone and con- 

 crete superstructures. The structures were 24 ft in width with crest 

 els of +7.1 ft Iwd. 



1933- The 290-f t-long trunk portions of the north and south breakwater 

 1934 (Figures 75 and 76, Section B) were capped with concrete super- 

 structures with +7.1 ft Iwd crest els. 



(Continued) 

 125 



