A Weekly Journal of [,3.00 a Year
[Entered at the Post Office of New York, N. Y., flS Second Class Matter. Copyrighted. lA88. by Munn & Co.J A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES. A YEAR. [,3.00WEEKLY. THE NEBRASKA CITY PONTOON BRIDGE. bridge begins, and reaches across the main river, with increase the strength of the steel anchoring cables. The We illustrate in the present issue a new bridge re- a length of 1,074 feet. As will be seen from the cut,thE' bows of the boats are to be sheathed with iron and cently completed, which crosses the Missouri River at bridge is angular or V-shaped. The point or apex of the bottoms are to receive an extra planking of oak. Nebraska City, Neb. The bridge is of a type that has the angle points down stream. When it is necessary It is considered certain that the rapid current will but little d for military th draw, the connections under p ed to been use , except purposes. It to open e at the apex are loos sweep all obstacles the boats. It is pro os consists of a flooring carried by a !lubstructure which ened and the current at once swings the two members remove the bridge when ice forms on the river. floats upon the river. A similar bridge across the Rhine, apart, leaving an unobstructed channel of 528 feet in The object of arranging the draw in the peculiar between Coblentz and Ehrenbreitstein, will be rernem- width. In this feature it is the largest drawbridge in shape shown was to facilitate closing.
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