Table 55 (Continued)

Table 55. Frankfort Harbor Structures Frankfort, Michigan

Table 55 (Concluded)

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Table 55 (Continued)

Construction and Rehabilitation History

existing structure and the steel sheetpiling were filled with stone

and the area capped with concrete.

Construction of a new north pier head and repair of the adjacent

1958

200 ft of the north pier (Figure 153, Sections

and K) was com-

pleted, The pier head consisted of a circular steel sheet-pile cell

with a diameter of 23.75 ft. The cell was stone filled and capped

with concrete to an el of

ft, and riprap was placed around its

slope, Section K was encased in steel sheet-

base on a

piling (Figure 154). Voids were filled with stone, and the area be-

tween the existing pier and the new steel sheetpiling was capped with

concrete at an el of

ft lwd. The new pier width was 33 ft.

The shoreward portion of the north pier (Figure 153, Sections

1960-

and L) was encased in steel sheetpilings (Figure 154) resulting in a

1961

new pier ranging from 29.75 ft (Section

to 33 ft (Section

width. The voids between the new steel sheetpiling and the existing

piers was filled with stone and capped with concrete (Figure 154).

The shoreward portion of the south breakwater (Figure 153, Sec-

1966

tions F , G, H, and I was rehabilitated. Rehabilitation consisted of

)

the placement of stone along the structures (Figure 155) on slopes of

Cover stone ranged from 9 (min) to 12 tons

along Sec-

tion F, 6 (min) to 8 tons (max) along Section G, and 3.5

5.5 tons (max) along Section H (Figure 155) on both sides of the

breakwater. Riprap (1 ton) cover stone was installed on the lakeside

only of Section I

Portions of the north breakwater (Figure 153, Sections D and E were

)

1977

replenished with fill stone, and the structure was grouted over with

concrete.

1981

Riprap stone was placed around the heads of both the north and south

breakwaters (Figure 153, Section A.

)

The lakeward end of the south

pier (Figure 153, Sections N and

was repaired by encasing it in

steel sheetpiling (Figure 154, Sections N and N-1). Voids between

the existing pier and new steel sheetpiling were filled with stone

ft lwd. Sec-

which was covered with a concrete cap at an el of

tion N was 30 ft wide, and Section

was 32 ft wide (Figure 154).

1982

The landward portion of the south pier (Figures 153 and 154, Sec-

tion 0) was repaired, and riprap was placed on the channel side of

side slopes. Fill stone also was replenished

the pier with

in the north pierhead cell (Figure 153, Section K-1).

(Continued)

(Sheet 2 of 3)

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