. The street railway review . oor system the longitudinal beams forthe support of the rails before mentioned. Where thebridges are for the sole use of the railway, they are moreoften plate or riveted girders than the pin connected. Asbefore stated the intcrurban electric lines have tended toimprove the highway bridges because they are usually incharge of competent engineers who see to it that the oldbridges are strengthened in a proper and scientific manneror if new ones are to be built, they are in accordance withthe best engineering practice and not left to the whims ofcounty officials with
. The street railway review . oor system the longitudinal beams forthe support of the rails before mentioned. Where thebridges are for the sole use of the railway, they are moreoften plate or riveted girders than the pin connected. Asbefore stated the intcrurban electric lines have tended toimprove the highway bridges because they are usually incharge of competent engineers who see to it that the oldbridges are strengthened in a proper and scientific manneror if new ones are to be built, they are in accordance withthe best engineering practice and not left to the whims ofcounty officials with no knowledge of bridge subject of bridges has been the cause of a greatmany disputes between the railway companies and the munic-ipal and county authorities with whom they have had todeal. The questions on which issue is taken are thoseregarding the manner in which the company is to occupythe bridge, that is, where the tracks are to be laid, the properdistribution of the cost of maintenance, and, where a new. MAIN STKKKT BRIDCIE. I,A FAYETTE, IND. with wider drive ways erected at Clark at the cost of therailway. Inquiries addressed to a number of tin- companies engagedin building briilges show that in their opinion the extensionof trolley lines has had a very beneficial influence upon thecharacter of the highway bridges built at the present time,as many of them are constructed with a view to their possi-ble occupancy by trolley lines. While there are some bridges in existence today whichare so crudely constructed, either through the ignorance ofthe builders or because of their desire to furnish the leastpossible bridge for the money, that a reconstruction is aprimary requisite to make them safe for the running ofelectric cars, the majority of them have been built underfairly good specifications and need but little in the way ofstrengthening. The trusses, as a rule, being heavy enoughto carry the load, the alterations made consist in putting inheavier floor sys
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
