Where highways cross railroads (at grade), difficulties in maintaining crossings in good condition; with light traffic, planks or macadam of small stone served; granite blocks or brick stand heavy automobile traffic, but construction labor cost is high; crossing made by laying old rails parallel to service rails, filling in spaces with fine macadam; maintenance cost is negligible.
Highway railroad crossings made with old rails
Cruces de carreteras y vias ferreas hechos con rieles viejos
Ingenieria Internacional ; 16 , n 7
1928
2 Figs.
Article (Journal)
English
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