Table 59 



Petoskey Harbor Breakwater 



Petoskey, Michigan 



Date(s) Construction and Rehabilitation History 



1895- Construction of a 600-ft-long portion of the breakwater (Figure 166, 



1896 (Sections B and C) was completed. This breakwater consisted of 

 stone-filled timber cribs built on a stone base (Figure 167, Sec- 

 tions B and C) . Part of the breakwater was 26 ft wide (Section B) , 

 and the remaining portion (Section C) was 28 ft wide. 



1897 Construction of the 355-ft-long shoreward portion of the breakwater 

 (Figure 166, Sections D and E) was completed. This portion of the 

 breakwater was rubble mound with a 10-ft crest width and a +7.0 ft 

 iwd crest el (Figure 167, Sections D and E) . A concrete walkway was 

 also installed on its crest. 



1905- Construction of the lakeward end of the breakwater (Figure 166, 

 1907 Section A) was completed. This portion of the breakwater was a 30- 



ft-wide stone-filled timber crib built on a stone base (Figure 167, 



Section A) . 



1930 The lakeward 895 ft of the breakwater (Figure 166, Sections A, B, and 

 C) was capped with a stone and concrete superstructure. The crest el 

 of the breakwater was +7.0 ft Iwd (Figure 167, Sections A, B, and C) . 



1949 The rubble-mound portions of the breakwater (Figure 166, Sections D 

 and E) were rehabilitated. 



1970 The rubble-mound sections of the breakwater (Figure 166, Sections D 

 and E) were rebuilt (including the concrete walkway). 



1973 Riprap stone (1 to 6 tons) was placed along both sides of the rubble- 

 mound portion of the breakwater (Figure 166, Sections D and E) . 



1977 Riprap stone was placed in areas along both sides of the timber crib 

 breakwater (Figure 166, Sections A, B, and C) . 



1978 Replenishment of fill stone was performed in the timber cribs (Sec- 

 tions A, B, and C) , and additional riprap was placed along areas of 

 the timber crib breakwater where stone was not placed in 1977. Rip- 

 rap was also placed along the rubble-mound breakwater (Sections D 

 and E) where washouts and voids existed. 



1985 A site inspection of the breakwater indicated superstructure tilt, 

 settlement, cracking, and loss of fill stone along the timber-crib 

 portion of the structure (Sections A, B, and C) which suggests sub- 

 structure deterioration. The rubble-mound portion of the breakwater 



(Continued) 

 261 



