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Scientific American, Vol. 55, No. 17 (October 1886) (1886)
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al of one span steel arch the latter, thus per- bridge as proposed mitting the use of by Mr. K. Emil Hil- one sidewalk of 13 gard, a civil engineer, feet and one road- until lately, of the way of 34 feet in St. Paul & North- width while the sus- ern Pacific Railway pension bridge is in Co., of… … PROPOSED STEEL ARCH BEIDGE AT MINNEAPOLIS, MINN.-BT K. EMIL HILGARD, C.E. © 1886 SCIENTIFIC AMERICAN, INCPatented · Patents · Munn · Feet · Inch · Water · Scientific American · Consists · Natural gas · Express money · Practical treatise · Address munn · Nicol prism · Steel arch · Electric light · Horse power · Cubic feet
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