Table 56
Leland Harbor Structures
Leland, Michigan
Construction and Rehabilitation History
Construction of a 440-ft-long south pier (Figure 158, Sections B and
1936
C) was completed. The pier consisted of woodpilings spaced 11 ft
I
apart and filled with stone (Figure 159, Sections B and C.
)
The lakeward 33 ft of the south pier (Figure 158, Section B) was
1952
cased in steel sheetpiling. The voids were filled with stone, and
The
the structure was capped with stone (Figure 159, Section B.
)
width of this portion of the south pier was 15.25 ft, and the crest
el was
ft lwd.
The lakeward 33 ft of the south pier (Figure 158, Section B) was
1966
rehabilitated, Riprap was placed on each side of the pier. It was
-5 ft at its crest and had
side slopes (Figure 159, Sec-
.
tion
A 407-ft-long portion of the south pier (Figure 158, Section C was
)
1968
rehabilitated by the placement of stone along both sides and across
pier had an 8-ft crest width and a
crest el. Cover
stone ranged from 1 (min) to 2 tons (max), and side slopes were
A 35-ft-long extension of the south pier (Figure 158, Sec-
tion A) involved the construction of two steel sheet-pile cells with
diameters of 17.5 ft each. The cells were filled with coarse aggre-
gate and capped with 500-lb (min) stone. The crest el of the cells
was
ft lwd, and riprap was installed around the lakeward cell.
A 1,200-ft-long offshore rubble-mound breakwater (Figure 158) also
was constructed. The breakwater had an 8-ft crest width,
side slopes on the lakeside, and
side slopes on the harbor
side (Figure 1 9 . The 300-ft-long north shore arm had a crest el of
(Figure 158, Section 1 ) and the remaining 900 ft of the
ft
1,
breakwater (Figure 158, Section I had a crest el of
)
ft
Cover stone of the breakwater ranged from 5 (min) to 7 tons (max),
and core stone ranged from 500 to 1,000
A site inspection of the harbor structures revealed them to be in
1983
fair to good condition. Settlement of cover stone and a portion of
was
the north shore arm of the breakwater (Figure 158, Section
observed and has subsequently been repaired by the placement of
additional stone. Stone settlement of portions of the entire south
pier were observed and scheduled for replenishment.
The structures are currently considered to be in good condition.
1985
250
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