Page "hobbies" Paragraph 541
from
Brown Corpus
The Essex Merrimack Bridge when first built was not covered.
As far as we know, no American bridge had been thus protected in 1792.
Richard S. Allen is the authority for the statement that the northern section was probably roofed by 1810.
Its original appearance is shown in an engraving published in the `` Massachusetts Magazine '' in May 1793, which is reproduced herewith ( Fig. 1 ).
A brief description accompanying the picture says that the bridge contained more than 6000 tons of timber.
Between the abutments on the Newbury shore and the south bank of Deer Island there was one span or arch measuring 160 feet ; ;
between the north shore of Deer Island and the Salisbury side there was an arch of 113 feet and a series of piers with a draw forty feet long.
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