Table 33 (Concluded) 



Date(s) Construction and Rehabilitation History 



1909- A 216-ft-long south pier extension was constructed (Figure 86, Sec- 

 1910 tion L) . The pier was a stone-filled concrete structure built on 



woodpllings and stone. It was 18 ft in width and had a crest el of 



+8.1 ft Iwd. 



1923- A 980-ft portion of the detached north breakwater was capped with a 

 1924 concrete superstructure (Figure 87, Section D) . The crest el of the 



structure was +8.6 ft Iwd. 



1924- Construction of the southerly 1,744-ft portion of the north break- 

 1929 water and the entire south breakwater (Figure 87, Section E) was com- 

 pleted during this time. The breakwater was a stone-filled concrete 

 structure built on stone. It had a crest width of 6.7 ft and an el 

 of +8.6 ft Iwd. The outer 54 ft of the north breakwater consisted of 

 three rectangular caissons. 



1950- A 530-ft-long section of the attached north breakwater (Figure 87, 



1952 Section B5) and a 68-ft-long portion (Section B2) were repaired. 

 Steel sheet piles were driven on both sides of the existing timber 

 crib structure. 



1953 The 1 ,385-ft-long south pier was constructed by the City of Milwaukee 

 (Figure 86, Section J). It consisted of steel sheet piles on the 

 channel side which were backfilled with earth. The existing pier 

 (time of construction unknown) was completely covered by the new 

 structure. 



1957- A 1,940-ft-long portion of the north breakwater was repaired (Flg- 

 1959 ure 87, Section B'-3 and C-1) . Steel sheetpiling was driven adjacent 

 to both sides of the timber crib structure. 



1962- A 1 ,840-ft-long portion of the north breakwater (Figure 87, Sec- 

 1964 tion C) was repaired. Steel sheet piles were installed on each side 

 of the existing timber crib. 



1976- A portion of the north breakwater was rebuilt (Figure 87, Sec- 

 1977 tion B5) . Steel sheet piles were installed on each side of the 



existing structure with the width varying from 30 to 32.5 ft. The 

 voids were filled with stone, and the concrete cap and parapet wall 

 were reconstructed. A parapet wall also was installed on an adjacent 

 portion of the breakwater (Section B2) . 



1984 A site inspection of the north breakwater revealed some sections in 

 good shape and others requiring repair and maintenance. 



1985 Repair of the head of the south breakwater was completed for a cost 

 of $810,942. A new caisson was constructed and capped with concrete. 

 Stone, ranging from 3 to 6 tons, was placed around the new caisson 

 for toe protection. 



1986 The breakwaters and piers are presently considered to be in fair 

 condition. 



142 



