FTE progress which is being huge new bridge over the part of the extension of the made in the construction of the chientang River, which is to form Shanghai-Hangchow Railway to Ningpo, was described at a meeting of the Engineering Society of China "held on April 26 at the Henry Lester Institute of Technical Education, Seward Road, by Dr. T. E. Mao, director of the engineering bureau in charge of the building of the bridge.
The bridge is located near Hangchow in-a north-south direction where the Chientang River is about 3,500 feet wide, The river channel is exceedingly unstable in respect to depth due to the effect of scour. A diffe fence of.20 feet in depth at mid-ehannel is usual when the cross. section of the river pared with that in December, Giiference was as much as 30 feet in 1935, At the edge of a cofferdam built in the river t scour of 25 feet 24 hours has been observed.
'Dealing with the construction work, Dr, Mao said that within the river' conical lines, which are a kilometre: apart, there are 16 spans of 220 feot each, making a total of 2.520 feet for the main bridge. The bridge double-decked, the upper deck befor a roadway and the lower for a'single line of standard gauge railway. The first five spans from the berth are placed level while, beg! hing with the 6th soap, there downward grade of 0:33-per cent. the north bank of the river the dis-lance Is about, 650 feet between the first river pier and the foot of range of hills, "The roadway, after leaving the main span, Is carried by three arch Epans towards the hill and then by concrete trestles to divide nito two roads at on angle of 120 degrees.
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