Table 33 



Milwaukee Harbor Structures 



Milwaukee, Wisconsin 



Date(s) Construction and Rehabilitation History 



1855- Construction of a 1 ,056-f t-long north pier at the entrance (Fig- 

 1866 ure 85) progressed during this period. The pier was a stone-filled 

 timber crib structure and was 24 ft in width (Figure 86, Section F) . 



1868- A 250-ft lakeward extension of the north pier was completed (Fig- 

 1869 ure 86, Section G) . The extension was a stone-filled timber crib 

 structure that was 28 ft in width. 



1871 An additional 200-ft extension of the north pier was constructed 



(Figure 86, Section H) . The extension was also a stone-filled timber 

 crib structure with a total width of 33.5 ft. 



1881- Construction of the shore-connected portion of the north breakwater 

 1893 was completed during this time (Figure 85) . The breakwater was built 

 with stone-filled timber cribs. The outer 1,756 ft was built on a 

 stone foundation, and the width of the structure ranged from about 20 

 to 32 ft (Figure 87, Sections A, B', B'-l, B-2, and B-5). Riprap was 

 placed along the base of most of the remaining structure. 



1888- Construction of the northern 3,780 ft of the detached portion of the 

 1899 north breakwater was completed during this period (Figure 87, Sec- 

 tions B'-3, C, and C-1). The structures were also built with stone- 

 filled timber cribs and ranged from 23 to 30 ft in width. Riprap was 

 placed along the base of the structure. 



1903- During this time the north pier was extended an additional 150 ft 

 1906 (Figure 86, Section I). The extension was a 28-ft-wide stone-filled 

 timber crib structure built on woodpilings with riprap installed 

 along the base on each side. The entire north pier was capped with a 

 concrete superstructure. The shoreward 1,056 ft (Section F) had a 

 crest el of +9.0 ft Iwd, and the remaining portion of the structure 

 (Sections G, H, and I) had an el of +11.5 ft Iwd. The shore- 

 connected portion of the north breakwater was capped with a concrete 

 superstructure (Figure 87, Sections A, B', B'l, B2, and B5) . The 

 shoreward 1,472-ft length (Sections A and B5) also included a 3-ft- 

 wide concrete parapet wall at an el of +11.4 ft Iwd. The remaining 

 portion of the breakwater (Sections B' and B'-l) had a crest el of 

 +8.1 ft Iwd. the 450-f t-long outer end (Section B'-l) had riprap 

 installed on each side of the structure. The el of the stone was 

 +3. ft Iwd, and it had side slopes of 1V:1.5H. 



1907- The detached portion of the north breakwater was extended southerly 

 1910 by 980 ft (Figure 87, Section D) . The extension was constructed of 

 stone-filled timber cribs and was 30 ft in width. The existing de- 

 tached portion of the north breakwater at this point (Figure 87, Sec- 

 tions B'-3, C, and C-1) was capped with a concrete superstructure, 

 which resulted in a crest el of +8.2 ft Iwd. 



(Continued) 



141 



