State Highway Commissioner of Michigan State Highway Department inaugurated grade separation construction program that involved approximately $7,000,000 for 25 underpasses and 14 overpasses, making total of 39 grade separations; in overpass type, drainage problem is nil, but in case where highway is depressed to pass under railroad drainage problem rates considerable study and analysis.
Pumps remove storm water
Elec World
Electrical World ; 107 , n 5 ; p 45 + 88
1937
Aufsatz (Zeitschrift)
Englisch
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