ier. half the weight of the floor and the traffic. Now that Its breadth from center to center of out- end pins. Between these trusses the depressed tracks are abandoned, the steel columns are of the Pratt type, with subdivided panels. will be put in place between each pair of trusses and At the… … ly braced together and are offices, etc., have been built WEST ABUTMENT OF THE HARLEM RIVER BRIDGE. respectively 46 and 54 feet at street grade and keneath in diameter, the inner drum the floor of the main viaduct. being 5 feet 1134 inches deep and the outer 5 feet 10 The two interior express…
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