T a b l e 23
M i a m i Harbor J e t t i e s
M i a m i H a r b o r , F l o r i d a , SAJ
Date
C o n s t r u c t i o n and R e h a b i l i t a t i o n H i s t o r y
N o r t h and s o u t h j e t t i e s ( F i g u r e 37) 2,300 and 2,200 f t l o n g , r e s p e c -
1926
t i v e l y , and 1,000 f t a p a r t , were c o n s t r u c t e d t o p r o v i d e c h a n n e l
protection.
1927
R e p a i r s were made t o t h e n o r t h j e t t y and r e v e t m e n t . The j e t t y sec-
t i o n was r e b u i l t t o o r i g i n a l d i m e n s i o n s w i t h a n e l e v a t i o n of
ft
m l w , a c r e s t w i d t h of 10 f t , and t h e s i d e s l o p e s were
below
m l w and
above m l w . A t o t a l of 3,450 t o n s o f g r a n i t e w a s
p l a c e d on t h e i n n e r 700 f t o f t h e j e t t y , and a p p r o x i m a t e l y 100 t o n s
w a s r e c o v e r e d and used o v e r t h e
s e c t i o n . T o t a l c o s t of t h e
r e p a i r w a s ,600. These r e p a i r s were r e q u i r e d b e c a u s e t h e h u r -
r i c a n e o f September 1926 ( p a s s e d o v e r Miami) which r e s u l t e d i n
s e v e r a l j e t t y b r e a c h e s e x t e n d i n g below m l w .
The n o r t h and s o u t h j e t t i e s were e x t e n d e d seaward 1 , 3 5 0 and 600 f t ,
1928
r e s p e c t i v e l y . The j e t t y s e c t i o n c o n s i s t e d of a 5 - f t c r e s t w i d t h a t
f t rnlw w i t h
s i d e s l o p e s above m l w and
below m l w . A
t o t a l of 9 , 5 0 0 t o n s of F l o r i d a l i m e s t o n e w a s u s e d as c o r e s t o n e and
37,300 t o n s o f g r a n i t e a s c a p s t o n e . T o t a l c o s t of t h e e x t e n s i o n s
w a s 8,000. A December s u r v e y o f t h e o r i g i n a l j e t t i e s ( e x c l u d i n g
t h e e x t e n s i o n s ) showed c r e s t
r a n g i n g from
t o -2 f t
seaward e n d s were below m l w .
A p p r o x i m a t e l y 100 f t of t h e
1929
The j e t t i e s and n o r t h r e v e t m e n t were r e p a i r e d . A t o t a l of 1 , 6 0 0 f t
o f t h e n o r t h j e t t y , 700 f t from i t s i n n e r e n d , and 2,200 f t o f t h e
s o u t h j e t t y ( e x c l u s i v e of t h e 1928 e x t e n s i o n ) w a s r e p a i r e d w i t h
g r a n i t e s t o n e t o a c r e s t w i d t h of 10 f t , a n e l e v a t i o n of
f t mlw,
and
s i d e s l o p e s . S t o n e w e i g h i n g 13,800 and 18,900 t o n s w a s
u s e d on t h e n o r t h and s o u t h j e t t i e s , r e s p e c t i v e l y . The t o t a l c o s t
of j e t t y r e p a i r s was 1,000.
B o t h j e t t i e s were s u r v e y e d i n 1931 and 1932. C e n t e r l i n e e l e v a t i o n s
to
f t rnlw on t h e i n n e r
f o r t h e n o r t h j e t t y were from
1932
f t rnlw on t h e o u t e r 1 , 3 5 0 f t . ( T h i s
2 , 3 0 0 f t and from -3 t o
s e c t i o n w a s damaged by s t o r m waves d u r i n g t h e s u r v e y p e r i o d . )
to
ft
C e n t e r l i n e e l e v a t i o n s f o r t h e s o u t h j e t t y v a r i e d from
.
rnlw
Based on t h e p r e v i o u s s u r v e y of t h e j e t t i e s , r e p a i r s were made t o
b r i n g t h e j e t t i e s up t o t h e d e s i g n s e c t i o n . The c r e s t w i d t h w a s
1934
10 f t , t h e c r e s t e l e v a t i o n w a s
f t mlw, t h e s i d e slopes w e r e
and t h e g r a n i t e s t o n e v a r i e d from 2 t o 10 t o n s . S e v e r a l s e c -
t i o n s on t h e n o r t h j e t t y , t o t a l i n g 2 , 1 0 0 f t , were r e p a i r e d and a
(Continued)
67
Previous Page
