or rearing the railroad em- Engaged in the work have been 9 sternwheel boats, work holds the material in place roughly, forming the bankment, but hampered and delayed at many points 3 tugs, over 100 lighters or barges, ranging from 100 roadbed, which is surfaced with coral rock where by the rock,… … viaducts, aggregating 5.78 miles in length. They ex- THE CONCRETE VIADUCT AT THE LONG KEY END. THESE CONCRETE BRIDGES ARE CONSTRUCTED tend from Long Key to Conch Key, 10,500 feet; across LITERALLY OVER THE SEA.
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