TRANSPORTATION ROOM
Overseas Highway Case
Welcome to "building a road bed" of the Overseas
Highway.
Page 3
This page by Jerry Wilkinson
First a survey must be done to establish a center
line and then the land cleared to begin roadbed preparation.
Using the aforementioned equipment, if the roadbed
is to be across open water it can be prepared from the bottom upwards as
it is filled.
The process is similar across marshland.
Low places across hammock land must be filled
for a somewhat level surface.
Even across level hard land, usually some filling
will be done to permit drainage.
Above is shown a section of north Key Largo east
of the Card Sound Bridge, but it could be anywhere in the Keys through
low land.
All stages require supervisors and inspectors
to insure the proper grades and quality of sub-fill are correct.
Above is a section of highway beginning to be
oiled. Depending on the specifications, numerous coats of sand and oil
are applied.
Continued on Page 4
Go to Key Largo Ferry, or
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