. Railroad structures and estimates . 0 4022 00 1 50 20% 315,000 lb. 2,200 165 50 360 1,540 ,200 460 120 200 Coet,S 10,240880 3,630400 3,600 1,540720 1,030 100 20 300 4440 T\T3e F 6. 60 0 street, 36 0 roadway. Quan-tity. 215,000 lb. 2,400 100 40 474 730 Coet, S 2,200320 730 830 855 05 20 300 21,600 Type F 6, 660=tr«>f, Quuu- Cost,tity. S 315,000 lb. 10,240 2,200 880 165 50 840 ,
. Railroad structures and estimates . 0 4022 00 1 50 20% 315,000 lb. 2,200 165 50 360 1,540 ,200 460 120 200 Coet,S 10,240880 3,630400 3,600 1,540720 1,030 100 20 300 4440 T\T3e F 6. 60 0 street, 36 0 roadway. Quan-tity. 215,000 lb. 2,400 100 40 474 730 Coet, S 2,200320 730 830 855 05 20 300 21,600 Type F 6, 660=tr«>f, Quuu- Cost,tity. S 315,000 lb. 10,240 2,200 880 165 50 840 ,500 ■.(.200 4005,170 840900 1,030 100 20 300 i ■ JXJ 116 HIGHWAY BRIDGES. Concrete highway bridges for spans with intermediate supportsare shown below for two, four and six track crossings and theestimated cost of these structures are given in Table 59, page117. TYPE F, CONCRETE STRUCTURES SPANNING TWO, FOUR AND SIX TRACKSWITH THREE I I I I ELEVATION 2 TRACK SCHEMETYPES F2
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