To cut to minimum, interference with traffic on electrified main line of New York, New Haven and Hartford Railroad, between New York and New Haven, 15 bridges recently have been renewed on mass production basis, by being lifted into position as completely assembled units, even to ballast and ties.
Mass-produced underline bridges
Ry Gaz
Railway Gazette and Railway News ; 79 , n 15
1943
Aufsatz (Zeitschrift)
Englisch
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