Inside Out Library
Scientific American, Vol. 56, No. 6 (1887) (1887)
leaf 0
o, are, substitution of steel towers for caissons, which are dredged down to about 125 feet ‘be- masonry, which diminishes the pressure. on founda- low high water. These caissons are 60 feet by 100 feet, It is expected'to pass trains over, this bridge before December ‘31, 1887. When’ it is… … © 1887 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 56, No. 6 (1887)
More like this
