Table 46 (Concluded) 



Date(s) Construction and Rehabilitation History 



Steel sheetpiling was driven on each side of the breakwater heads 

 (Section Al) forming a structure 40.3 ft in width. The voids were 

 stone filled and capped with concrete. The pier connections (Sec- 

 tion Q) were capped with an 8-ft-wide precast concrete slab at an 

 el of +4.5 ft Iwd. Stone was added to the channel side and the lake- 

 side of the structure with slopes of IV: 2H and 1V:1.5H, respectively. 

 Steel sheetpiling also was added along the sides of the south pier 

 (Figures I and J). The voids were filled with stone, and a concrete 

 cap was added. 



1979 An inspection of the structures indicated that the breakwaters and 

 north pier were in good condition, while the south pier revealed 

 cracks, settlement, and erosion of concrete and was considered in 

 fair condition. It was noted that replenishment of riprap stone was 

 required in some areas along the breakwater. 



1980 Riprap stone was placed around the lakeward end of the north break- 

 water (Section Al) on the lakeside. The north and south pier con- 

 nections underwent replenishment of stone in areas that had settled. 

 The lakeward 55 ft of the south pier (Section I) and a 55-ft-long 

 portion of Section J were rehabilitated. Precast concrete caps were 

 installed. 



1983- A 142-ft-long portion of the north breakwater (Figure 123, Section B) 



1984 and a 124-ft-long portion of the south breakwater (Section A) were 

 encased with steel sheetpiling, filled with stone, and capped with 

 concrete. The remaining portions of Section B (north breakwater) and 

 Section A (south breakwater) were encased with protection stone. 

 Approximately 80,000 tons of stone was used, and the cost was 

 approximately $3,000,000. 



1985 An inspection of the structures revealed them to be generally in good 

 condition. Fill stone replenishment was recommended, however, at the 

 lakeward heads of the breakwaters (Figure 123, Section Al). An 

 aerial view of Holland Harbor Structures is shown in Figure 125. 



201 



