Table 94 



Dunkirk Harbor Structures 



Dunkirk, New York 



Date(s) Construction and Rehabilitation History 



1868- Construction of a 1 ,410-ft-long west pier (Figure 259, Section I) was 

 1870 completed during this time. The pier was constructed of concrete and 

 stone (Figure 260, Section I) and was 30 ft in width. 



1897- A concrete superstructure was installed on most of the west pier. 



1921 The maximum el of the superstructure was +11.3 ft Iwd (Figure 260, 



Section I) . A small portion of the superstructure next to the shore- 

 line was constructed with large stone. 



1898 Construction of a 577-ft-long portion of the outer breakwater 

 (Figure 259, Section J) was completed. The breakwater was a stone- 

 filled timber crib structure that was 30 ft in width (Figure 260, 

 Section J) . 



1899 Construction of a 2,237-f t-long portion of the outer breakwater (Fig- 

 ure 259, Sections G and H) was completed. The structure was 30 ft 

 wide and consisted of stone-filled timber cribs (Figure 260, Sec- 

 tions G and H) . A concrete superstructure was installed on a 310-ft- 

 long portion of the breakwater (Section G) . It had an el of +10.3 ft 

 Iwd (Figure 260) . 



1930 A concrete superstructure was installed on a 577-ft-long portion of 

 the outer breakwater (Figure 259, Section J). The maximum el of the 

 superstructure was +8 ft Iwd (Figure 260, Section J). Stone riprap 

 was placed along the lakeside at the west pier also during this year. 



1931 A stone superstructure was installed on a 1 ,827-ft-long portion of 

 the outer breakwater (Figure 259, Section H) . The el of the super- 

 structure was +8.3 ft, and it had a 10-ft crest width (Figure 260, 

 Section H) . The stone extended along the lakeside of the breakwater 

 on a 1-V:1.5-H slope. A 110-f t-long portion of Section H (Fig- 

 ure 259) included a precast concrete superstructure. 



1979- Construction of a 1 ,200-f t-long west and 1 ,464-f t-long east break- 

 1980 water (Figure 259) was completed during this period. The structures 

 were rubble mound with els of +11 ft Iwd, crest widths of 10 ft, side 

 slopes of 1V:1.5H, and armor stones ranging from 1,400 to 3,800 lbs. 



1986 The inner rubble-mound breakwaters presently are in good condition, 

 and the west pier and outer breakwater are considered to be in fair 

 condition. The concrete portions of the superstructure of the outer 

 breakwater and pier show signs of spalling and slight separation at 

 the joints; however, no immediate action is required. The stone 

 superstructure portions of the outer breakwater seem to have settled 

 lakeward in areas, and additional stone has been recommended to in- 

 crease the height of the structure to its original design. An aerial 

 view of the Dunkirk Harbor structures is shown in Figure 261. 



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