Table 27 



Algoma Harbor Structures 



Algoma, Wisconsin 



Date(s) Construction and Rehabilitation History 



1871 Construction of a 352-ft-long north pier was completed (Figure 69, 

 Sections A and B) . The structures were built of woodpilings with 

 stone fill. The shoreward 308-ft length of the pier was 17 ft in 

 width, and the lakeward 44 ft was 23 ft in width (Figure 70, Sec- 

 tions A and B) . 



1875- A 450-ft-long extension of the north pier, a 300-ft-long detached 

 1889 north breakwater, and a 101-ft-long south breakwater were constructed 

 during this time (Figure 69, Section C) . The structures were built 

 of stone-filled wooden cribs and were 20 ft in width (Figure 70, 

 Section C) . 



1908 Construction of the 1 ,429-f t-long shoreward portion of the south 



breakwater was completed (Figure 69, Sections D-F) . The shoreward 

 200-ft length of the breakwater was a stone-filled timber crib struc- 

 ture (Figure 70, Section F) , and the remaining portion of the break- 

 water was built of woodpilings filled with stone (Figure 70, Sec- 

 tions D and E) . The structure ranged from 14 to 17 ft in width 

 (Figure 70, Sections D-F). 



1932 The north pier, the detached north breakwater, and the south break- 

 water, with the exception of the shoreward 200 ft in length, were 

 capped with a concrete superstructure (Figures 69 and 70, Sec- 

 tions A-E) . The crest el of the structures was +7.1 ft Iwd. 



1935 The shoreward 200-ft length of the south breakwater (Figures 69 



and 70, Section F) was capped with a concrete superstructure with a 

 +7.1 ft Iwd parapet crest el. 



1986 The structures have undergone maintenance, but no major repairs, and 

 are presently in good condition. 



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