Table 52 



Manistee Harbor Structures 



Manistee, Michigan 



Date(s) Construction and Rehabilitation History 



1912- Construction of the lakeward portions of the north pier (Figure 145, 

 1915 Sections A-1, A, B, C, D, and E) and the south breakwater (Fig- 

 ure 145, Sections B-1 and B) was completed during this time. These 

 structures consisted of stone-filled timber cribs. The width of the 

 north pier ranged from 24 to 30 ft (Figure 146) , and that of the 

 south breakwater was 30 ft (Figure 147, Sections B and B-1). 



1917- Construction of the shoreward portion of the south breakwater (Flg- 

 1920 ure 145, Sections M, N, 0, 0-1, P, and Q) was completed. The break- 

 water consisted of stone-filled woodpilings spaced from 9 to 17 ft 

 apart (Figure 147) . The breakwater was capped with a stone and 

 concrete superstructure (Figure 147) that ranged from +5.7 ft 

 (Section P) to +6.7 ft (Sections M, N, 0, and 0-1) Iwd. 



1926 The lakeward end of the north pier (Figure 145, Sections Al-A, and B) 

 was capped with a concrete and stone superstructure (Figure 146, Sec- 

 tions A, A-1, and B) . The crest el of the pier was +7.1 ft Iwd. 



1933- The lakeward end of the south breakwater (Figure 145, Sections B and 

 1935 Bl) and the shoreward end of the north pier (Figure 145, Sections C, 

 D, and E) were capped with concrete and stone superstructures. The 

 crest el of the structures was +7.1 ft Iwd (Figures 146 and 147). 



1942 A 350-ft-long shoreward extension of the north pier (Figure 145, Sec- 

 tion F) was constructed. The extension consisted of woodpilings 

 filled with stone (Figure 146, Section F) . A concrete superstructure 

 was installed on the channel side to an el of +6.0 ft Iwd. 



1949- Construction of the south pier (Figure 149, Section J) was completed. 

 1950 This structure consisted of steel sheetpiling spaced 15.7 ft apart 



and filled with stone (Figure 146, Section F) . The crest el of the 



pier was +7.0 ft Iwd. 



1953 The north pierhead (Figure 145, Section A-1) was rebuilt by encasing 

 it in steel sheetpiling. The structure width was increased to 

 35.3 ft, voids were filled with stone, and a concrete cap was in- 

 stalled at a crest el of +8.0 ft Iwd (Figure 146, Section A-1). 



1964- Portions of the north pier (Figure 145, Sections A-F) and the south 

 1966 breakwater (Sections Bl , M, N, 0, 0-1, and P) were rehabilitated 

 during this time. Sections C through E of the north pier (Fig- 

 ure 146) were encased with steel sheetpiling which resulted in pier 

 widths ranging from about 31 to 38 ft. Voids were filled with stone, 

 and a concrete cap was installed at an el of +8.0 ft Iwd. Section F 



(Continued) 



232 



