Table 12 



Kennebunk River Jetties 



Kennebunk, Maine 



Date(s) Construction and Rehabilitation History 



1829- The history of the jetties dates back many years prior to 1829 when 

 1893 the Federal government made its first appropriation for repair of the 

 wooden piers built by local interests to protect the river entrance. 

 Subsequent enactments provided funds to repair these structures, and 

 during the period 1829-52 granite piers were erected at the en- 

 trance. The west jetty was completed in 1871 to dimensions of 160 ft 

 for the wing wall and 290 ft for the main trunk. The east jetty is 

 534 ft long and has a 232-ft wing wall at its landward end (Fig- 

 ure 13). The structures consisted of regularly shaped cut stone 

 placed in pyramid fashion (Figure 13, inset), and resulting side 

 slopes varied from 3V:1H to vertical. Top elevations on the east and 

 west jetties were +16 to +17 ft mlw and +13 ft mlw (+16 ft mlw on 

 pier at seaward end), respectively. The top one or two rows of stone 

 were held together with steel dowels. Width of the top row of stones 

 varied from 2 to 6 ft. The jetties, spaced about 250 ft apart, con- 

 verge slightly in the seaward direction with the east jetty approxi- 

 mately 350 ft farther seaward. Stone piers of similar construction 

 were placed at the seaward ends of the jetties. The piers were 

 square shaped in plan view and two to three times larger in cross 

 section. Apparently, the jetties were repaired in the early 

 1890' s. Other repair work may have been completed between 1895 and 

 1930. 



1931 The east jetty was repaired by resetting 300 tons of wall stone, 



placing 212 tons of rubble stone, placing 165 cu yd of concrete, and 

 adding 50 iron pins to the capstone for a total cost of $3,000. 



1935 The jetties were repaired by resetting 85 tons of wall stone, placing 

 504 tons of rubble stone, and placing 20 cu yd of concrete for a 

 total cost of $2,800. 



1954 Three sections of the east jetty, totaling 59 lin ft, were repaired 

 by replacing stone to the general dimensions of adjacent undamaged 

 sections of the jetty. Cost of the repairs was $9,400. 



1962 The jetties were repaired by resetting stone and placing concrete at 

 several locations, and a stone berm was placed around the west jetty 

 stone pier. The repair sections were typically 1 to 8 cu yd in 

 volume. The stone berm around the west jetty head was placed to an 

 elevation of +12 ft mlw and a 1V:1.5H side slope, and it consisted of 

 stone weighing a minimum of 2 tons. Total cost of the repairs was 

 $12,900. 



(Continued) 

 27 



