The Strauss Bascule Bridge Company, Inc., engineers and designers of trunnion, bascule and direct lift bridges. . surate idea of the great impor-tance of this bridge. Reference has already been made to themethod of erecting the heel trunnion type in theopen position for the C. & N. W. Ry. Anotherexample where the bascule span was erected inthe open position is found in the Great NorthernRy. bridge over the entrance to the Lake Washing-ton Canal at Seattle. Washington, illustrated inFig. 25. In this case it was unnecessary to maintainrailway traffic and it was not particularly essentialto maint
The Strauss Bascule Bridge Company, Inc., engineers and designers of trunnion, bascule and direct lift bridges. . surate idea of the great impor-tance of this bridge. Reference has already been made to themethod of erecting the heel trunnion type in theopen position for the C. & N. W. Ry. Anotherexample where the bascule span was erected inthe open position is found in the Great NorthernRy. bridge over the entrance to the Lake Washing-ton Canal at Seattle. Washington, illustrated inFig. 25. In this case it was unnecessary to maintainrailway traffic and it was not particularly essentialto maintain navigation, but the advantage andeconomy of dispensing with false work in thechannel were sufficiently important to weigh infavor of erecting the bridge in the manner illus-trated. A view of the bridge in the final stageof completion is shown on the frontispiece ofthis catalogue. Fig. 26 illustrates the erection of the EricR. R. bridge over the Cuyahoga River at Cleve-land. Ohio, without interruption to railway trafficoxer the existing -wing bridge which it replaced. The Strauss Bascuh Bridge Company. The new bridge was built in theopen position, the counterweightbeing designed to clear the rail-way traffic in the open position(illustrating the method in usebefore the development of thewing counterweight system pre-viously described) ; the sections ofthe trusses and floor system werehoisted into place by a cable oper-ated derrick secured to the por-tion of the structure already builtand moved up as the work pro-gressed. To facilitate construc-tion, the rail road, though a doubletrack line, operated its trains ona single track at the bridge previously noted, it isnot always advantageous to builda bascule bridge in the openposition, Fig. 27 illustrating themethod of building the NorthernPacific Railway bridge in theclosed position, over the DwamishRiver at Seattle. Washington. Inthis instance, it was unnecessaryto maintain navigation, as thechannel had not been fullyd
Size: 1499px × 1666px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookidthestraussba, bookyear1920
