Table 41 (Concluded) 



Date(s) Construction and Rehabilitation History 



1939- Riprap was placed on each side of the lakeward head of the detached 

 1940 breakwater (Figure 107, Section A). The crest of the riprap was 

 placed at an el of +5.1 ft Iwd, and side slopes of 1V:1.3H were 

 installed. The east breakwater (Figures 105 and 106, Section N) was 

 capped with a concrete superstructure to an el of +11.4 ft Iwd. 



1948 The shoreward end of the west pier (Figures 105 and 107, Section D) 

 was reconstructed resulting in a pier that was 21 ft in width. 



1968 Riprap was placed along both sides of the outer 1,106 ft of the de- 

 tached breakwater (Figure 105, Sections B and C) ; both sides of the 

 outer 537 ft of the west pier (Figure 105, Sections E and F) ; and 

 along the outer 1,146 ft of the east pier (Figure 105, Sections M and 

 M-1) . Section M-1 included riprap on the lakeside only (Figure 106) 

 with the crest at an el of +4 ft Iwd. The outer end of the east pier 

 (Figure 106, Section M) included riprap with a +4 ft Iwd berm on the 

 lakeside and a -2 ft el on the harbor side. Side slopes were 

 1V:1.5H. Riprap along the west pier (Figure 107, Sections E and F) 

 was installed with side slopes of 1V:1.5H and an el of +4 ft Iwd on 

 the lakeside and below the surface of the water on the harbor side 

 for toe protection. Riprap installed along both sides of the outer 

 end of the detached breakwater (Figure 107, Sections B and C) was 

 installed at an el of +4 ft Iwd with side slopes of 1V:1.5H, with the 

 exception of the head (Section C) which had a slope of IV: 2H on the 

 lakeside. 



1972 The shoreward portion of the west pier (Figure 105, Section D) and a 

 portion of the east pier (Figure 105, Sections H and J) were reha- 

 bilitated. Steel sheetpiling was driven on each side of the 

 existing piers, and the voids were filled with stone. The west pier 

 (Figure 107, Section D) was capped with concrete with a crest el of 

 +7 ft Iwd and a new width of 28 ft. The east pier (Figure 106, 

 Sections H and J) consisted of a concrete and stone cap installed at 

 a cost el of +7.85 ft Iwd. The inner portion (Section H) was 34 ft 

 in width and remaining portion (Section J) was built 38 ft wide. 



1978 The concrete cap on the shoreward end of the detached breakwater 

 (Figures 105 and 107, Section A) was rebuilt. 



1979 An inspection of the structures indicated that the east breakwater 

 was in fair condition and the other structures generally were in good 

 condition. Riprap on the lakeside of the detached breakwater was low 

 in areas, and the concrete cap on the east pier had deteriorated in 

 areas. Subsequent maintenance repairs have been performed. 



1986 The structures are presently in good condition. 



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