answers: from 1909 to 1912
context: as the Knights Key-Pigeon Key-Moser Channel-Pacet Channel Bridge, was constructed from 1909 to 1912 under the direction of Henry Flagler and Clarence S. Coe as part of the Florida East Coast Railway's Key West Extension, also known as the Overseas Railroad. After the railroad was damaged by the Labor Day Hurricane of 1935, the line was sold to the United States government, which refurbished Seven Mile Bridge for automobile use. Unsupported sections were added in 1935 to widen it for vehicular traffic. Dismantled trackage was recycled, painted white, and used as guardrails. It had a swing span to allow passage </s> likely used by George Washington on his journey from Philadelphia to Cambridge, Massachusetts to assume his command of the Colonial Army in 1775. The first bridge at this point was proposed in 1803 by the Milford and Stratford Bridge Company, whom changed their name to the Washington Bridge Company that same year. The first permanent standing (wooden) bridge opened in 1813, complete with a toll. This bridge was rebuilt at least twice: once in 1807 when ice flows carried the bridge out to sea and again in 1868 when it was struck by the steamer Monitor. In 1844 Governor Roger </s> the original. The bridge carries the Florida Keys aqueduct, supplying water to points west, as well as fiber optic cables, providing telecommunications to and from the lower Keys. Each April, the bridge is closed for about 2.5 hours on a Saturday to allow the Seven Mile Bridge Run, a "fun run" of some 1,500 runners that commemorates the Florida Keys bridge rebuilding project. The event began in 1982 to commemorate the completion of a federally funded bridge building program that replaced spans that oil tycoon Henry Flagler constructed in the early 1900s to serve as a foundation for his Overseas
question: when was the old 7 mile bridge built