. The railroad and engineering journal . enext summer, so that at least one years delay has resultedfrom the accident. * See the and EKGiNeiiBiiw; Journal for February, 1890, p«g« Vol. LXV, No. 9.] ENGINEERING JOURNAL. 415 THE MORANDE BRIDGE OVER THE RHONE. The accompanying illustration, fig. i, which is takenfrom Le Genie Civil, shows the new Morande Bridgeover the Rhone at Lyons, France. The bridge is an archbridge of three spans resting on two abutments and twopiers of granite masonry. The piers are built upon cais-sons sunk by the compressed air process, the foundations were simp
. The railroad and engineering journal . enext summer, so that at least one years delay has resultedfrom the accident. * See the and EKGiNeiiBiiw; Journal for February, 1890, p«g« Vol. LXV, No. 9.] ENGINEERING JOURNAL. 415 THE MORANDE BRIDGE OVER THE RHONE. The accompanying illustration, fig. i, which is takenfrom Le Genie Civil, shows the new Morande Bridgeover the Rhone at Lyons, France. The bridge is an archbridge of three spans resting on two abutments and twopiers of granite masonry. The piers are built upon cais-sons sunk by the compressed air process, the foundations were simpletrusses entirely of oak, and rested on pierscomposed of groups of oak piles driven into the bed of theriver, which is chielly gravel. This bridge had stoodover 100 years, but its width, only 42 ft. in all, and itssharp grades were a serious obstruction to travel, and ithad at last begun to show signs of weakness. Its numer-ous piers, moreover, and the rip-rap used to protect them,constituted an impediment to the boats navigating the. Fig. MORANDE BRIDGE OVER-THE RHONE. being about 45 ft. below low water. The arches at thecenter have a clear height of 26 ft. above high water. Each span is composed of eight iron trusses, spaced between centers, except the two outside trusses, whichare ft. from the adjoining inside truss. The totalwidth of the bridge is 65 6 ft., divided into a roadway 36ft. in width and two sidewalks, each ft. wide. Thecentral arch has a span of 221 ft., a rise of ft., and aradius of ft.; the two side arches have each a spanof 210 ft., a rise of 13 ft., and a radius of ft. The I river and an obstruction to the free passage of the waterin times of flood. The bridge, nevertheless, had donegood service and had a long life for a wooden structure, i THE WHALE-BACK STEAMER. The ■■ whale-back steamer Charles W. Wetmore,built by the American Barge Company, at Duluth, Minn.,has succeeded in making a voyage across the Atlanti
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
