toll-free on January 30, 1858. The current bridge was constructed in 1910, along with the dam that turned the lower Charles River from a tidal estuary into a fresh-water basin. This reduced the problematic odor from raw sewage flowing into the river by keeping the formerly tidal lands covered with water. It was completed on June 30, and greeted with a two-hour fireworks display that Fourth of July. Thousands of people watched from the new Boston Embankment (the early Charles River Esplanade), which took the place of the former tidal flats. Construction of the Museum of Science began on the dam in 1948, and finished in 1951. 2010–2011 construction project The Massachusetts Department of Transportation completed a 2-year project to rehabilitate the Craigie Bridge and to completely replace the drawbridge in 2011. The project required the closure of the Boston-bound lanes from November 6, 2010, through mid December 2010, and again from early February 2011 through mid-April 2011, necessitating traffic detours. This was paid for out of borrowed funds as part of the statewide Accelerated Bridge Program. 2019 bicycle safety project In November 2018, a Boston University graduate student was killed by a dump truck while bicycling on the bridge as both turned right onto Museum Way. The next month, MassDOT announced that dedicated bicycle signals and protected bicycle lanes would be added in summer 2019, dropping automobile traffic to two lanes in each direction. See also List of crossings of the Charles River Footnotes References Bascule bridges in the United States Bridges completed in 1810 Bridges completed in 1910 Bridges completed in 2011 Bridges in Boston Bridges over the Charles River Dams in Massachusetts Former toll bridges in Massachusetts Road bridges in Massachusetts Steel bridges in the United States West End, Boston