and each trough flooring of which we spoke in the descrip- the trusses removed. carrying two tracks. At the center of the draw- tion of the viaduct is used on all three spans, and the The great 400 foot four track drawspan over the bridge the trusses are 64 ft. deep center to center effect, as may… … ly braced together and are offices, etc., have been built WEST ABUTMENT OF THE HABLEH BIVEB BBIDGE. respectively 46 and 54 feet at street grade and beneath in diameter, the inner drum the floor of the main viaduct. being 5 feet 11% inches deep and the outer 5 feet 10 The two interior express tracks…
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