Table 53. Portage Lake Harbor Piers Portage Lake, Michigan

Figure 148. Aerial view of Manistee Harbor, Michigan

Figure 149. Portage Lake Harbor, Michigan

TechReport3cF
Page Navigation
42

Table 53

Portage Lake Harbor Piers

Portage Lake, Michigan

Construction and Rehabilitation History

Date

Construction of a 1,149-ft-long north pier and a 383-ft-long south

pier (Figure 149, Sections B, C, E, and

1888

was completed during this

time. The lakeward end of the north pier was built with

stone-filled, timber cribs (Figure 150, Section B) on a stone base.

The south pier and the shoreward end of the north pier consisted of

woodpilings with a stone fill.

The north pier was extended lakeward by

ft (Figure 149, Sec-

1901

tion A ) , and the south pier was extended 900 ft (Figure 149, Sec-

tions A and B.

)

The lakeward 200 ft of each pier consisted of 30-ft-

wide stone-filled timber cribs (Figure 150, Section A) built on a

stone base. The trunk portion of the south pier was similar except

it was 24 ft in width (Figure 150, Section B.

)

150, Sections C, E,

The shoreward ends of the piers (Figures 149 and

about 18 to 24 ft

and F) were rebuilt with woodpilings spaced from

1940

apart and filled with stone. Concrete and stone

superstructures were

constructed along the entire length of each pier

(Ffgure 150) to a

crest el of

ft lwd.

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

(Figure 149, Section A during this period, and stone fill was re-

)

1981

plenished at various areas along both piers. After replenishment,

the concrete caps were repaired.

An inspection of the site indicated the piers were, in general, in

1985

fair condition, Settlement and cracking of the superstructure and

fill stone loss indicate some substructure deterioration. Replenish-

ment with large fill stone has been recommended along with additional

riprap installation, An aerial view of Portage Lake Harbor piers is

shown in Figure 151.

238

Index

Privacy Statement
Press Release
Contact