Table 24 (Concluded) 



Date(s) Construction and Rehabilitation History 



was stone filled and capped. The outer end of the north pier, how- 

 ever, was constructed with a 47. 75-f t-diameter cellular sheet-pile 

 structure (Figure 64, Section D) . The cell was filled with stone and 

 gravel and capped with a concrete superstructure at an el of +8 ft 

 Iwd. 



1944 An 880-ft-long portion of the south pier (Figure 63, Section F) was 

 reconstructed similar to other sections of the pier. Steel sheet 

 piles were installed forming a pier width of 22 ft. The voids were 

 stone filled, and the structure was capped with a concrete super- 

 structure installed with a crest el of +7.0 ft Iwd (Figure 64, 

 Section F) . 



1946 The shoreward 525-ft length of the south pier was modified (Fig- 

 ures 63 and 64, Section E) . A rubble-mound superstructure was con- 

 structed on the existing structure. The crest width of the new 

 superstructure was 4 ft, and it had an el of +4.5 ft Iwd. 



1954 The cellular sheet pile at the lakeward end of the north pier was re- 

 paired (Figure 63, Section D) . 



1955 A 613-ft-long section of the south pier was repaired (Figure 63, 

 Section C) . 



1963 Repairs were made to a 508-ft-long section of the south pier (Fig- 

 ure 63, Sections A and B) and a 1 , 164-f t-long portion of the north 

 pier (Figure 63, Sections A, B, and C) . 



1965 An 880-ft-long portion of the south pier was repaired (Figure 63, 

 Section F) . 



1974 The cellular sheet-pile north pierhead was again repaired (Figure 63, 

 Section D) . 



1977 The lakeward end of the south pier (Figure 63, Section D) experienced 

 some settlement and was observed slightly leaning toward the channel. 

 Additional riprap placement was completed in the area. 



1982 A site inspection of the structures indicated that the north pier was 

 in very good condition and that the south pier was generally in good 

 condition. The settlement of the lakeward end of the south structure 

 (Figure 63, Section D) appeared to have stabilized since placement of 

 the riprap in 1977. The concrete superstructure of the portion of 

 the pier needed maintenance however. 



1986 The piers have experienced reconstruction, repairs, and maintenance 

 during their lifetime, and they presently are considered in good 

 condition. 



106 



