Table 9 



Ashland Harbor Breakwater 



Ashland, Wisconsin 



Date(s) Construction and Rehabilitation History 



1889- Construction of a 7,363-f t-long timber crib breakwater progressed at 

 1894 the site (Figures 21 and 22, Section C) during this time. The struc- 

 ture was filled with timber slabs and capped with stone. It had a 

 crest width ranging from 20 to 28 ft and was installed at el +7 ft 

 Iwd. 



1908- Stone reinforcement was installed on both sides of the structure 



1910 (Figure 22, Section C) on a slope of 1V:1.5H. 



1911 A timber crib pierhead was constructed. The structure was stone and 

 timber filled, 32 ft wide, and 48 ft long. Riprap toe protection was 

 included (Figures 21 and 22, Section A). 



1912- A 589-f t-long rubble-mound breakwater was built during this period. 



1913 The structure connected the pierhead to the original breakwater (Fig- 

 ure 21, Section B) . It had a +7 ft Iwd crest el with a 10-ft-width 

 (Figure 22, Section B) . Side slopes were approximately 1V:1H. 



1913- A concrete and stone cap (superstructure) was installed on the pier- 



1914 head. The el of the structure was now +6.75 ft Iwd. 



1986 Only routine maintenance has been performed, and the structure pres- 

 ently is in fair condition. 



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