. The street railway review . e girder span immediately above the tracks of the steamline. The second trestle is also constructed of steel and is 1,150ft. in length, with a 70-ft. plate girder bridge over the tracks as in D>:y poles 55 ft. ali^ne the in order to avoid a caljie crossing. Ihe I [nckeiiMuk River is crossed on wlial i- lo Ik- the largest are provided at a distance of 150 ft. from each bridge portal andone indicating lamp on the bridge. The siKnal circuits arc closedby the bridj{e lender just before openinff the draw. The of the llackensack branch
. The street railway review . e girder span immediately above the tracks of the steamline. The second trestle is also constructed of steel and is 1,150ft. in length, with a 70-ft. plate girder bridge over the tracks as in D>:y poles 55 ft. ali^ne the in order to avoid a caljie crossing. Ihe I [nckeiiMuk River is crossed on wlial i- lo Ik- the largest are provided at a distance of 150 ft. from each bridge portal andone indicating lamp on the bridge. The siKnal circuits arc closedby the bridj{e lender just before openinff the draw. The of the llackensack branch inclnded many intcr-c-ling features, as on a portion of the route it was necessary to cutthrouKli 3 stretch of swamp with a dense growth of timber and. IUWliK IIUUSK, IvDGKWATI; lAKK sifl-: drawbridge designed pnrely for a street railway line that is to befound in the country. The draw is 160 ft. long, and it is of theriveted truss type. The foundation of the center pier consists ofpiling on which is a grillage above which is heavy masonry. Frointhe illustration it will be noted that the cross section is spacedfor two tracks, the track centers being 11 ft. in., to provide forthe passage of wide cars. The bridge is kept in line by four endrests which are adjustable from above, and the alignment of thetrack is maintained by means of four shoes at each end, under theend of the rails, and the bridge is locked by the usual springlatches. The draw is so designed that it can be operated by bandor electric power, there being a G. E. 800 motor with a trainof gearing, by means of which the draw can be opened and closedin i^{. minutes. Current for operating the motor is taken froma submarine cable which connects the regular feeders
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
