September 20, 1935: Work neared completion on the new Railroad Bridge over the Cape Cod Canal. The bridge weighed 2000 tons and carried a single rail track. At the time of its opening on December 29, 1935, the new bridge had the longest span of any vertical lift bridge in the United States. This span of 544 feet hung suspended from the two 265-foot-tall towers, with its lower rail 135 feet above the canal at low tide. When a train crosses, the span is lowered into place. At all other times, it hangs high above the waterway permitting ships to pass through.