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West 4th Street Bridge
In 1877 the West Fourth Street Bridge replaced the Dover Street Bridge, itself a successor to the 1805 South Boston Bridge. The South Boston Bridge was the oldest bridge to connect Boston to South Boston, and is the most inland of all bridges built over the Channel. The West Fourth Street Bridge was rebuilt in 1893-94 and was replaced early this decade by the current bridge of that name. The land under South Bay Park was filled-in by the mid 1850s and is straddled by two bridges crossing the Fort Point Channel: the West 4th Street Bridge and Broadway Bridge.