Editing Tobin Bridge (section)

===Construction and financing===
The new bridge was originally operated by the Mystic River Bridge Authority. The bridge, according to the statute enacted May 23, 1946, would be turned over to the [[Massachusetts Department of Public Works]] once the $27 million in bonds used to finance the bridge's construction was retired. The bridge would then become part of the state highway system to be maintained and operated by the department free of tolls.<ref>{{Cite book |publisher=Massachusetts General Court |title=House Bill 1979: An Act Providing For The Construction, Maintenance, Repair And Operation Of A High Level Toll Bridge Between The Cities Of Boston And Chelsea Over The Mystic River And The Tracks Of The Boston And Maine Railroad, Providing For The Creation Of The Mystic River Bridge Authority And Defining Its Powers And Duties And Providing For The Financing Of Said Project |url=http://archives.lib.state.ma.us/handle/2452/227780 |language=en |year=1946}}</ref> Operation of the bridge was turned over to the new [[Massachusetts Port Authority]] in 1956.<ref>{{Cite book |url=https://archive.org/details/actsresolvespass1956mass |title=Acts and resolves passed by the General Court |year=1956 |publisher=Massachusetts General Court}}</ref>

The Chelsea Bridge originally remained intact; the southern section remained open as truck access to Mystic Wharf, while the northern section was closed to traffic but still carried a water main across the Mystic River.<ref>{{cite news |url=https://www.newspapers.com/clip/74451295/the-boston-globe/ |title=M. D. C. Asks Bridge Authority Pay for New Water Tunnel |newspaper=Boston Globe |date=April 17, 1950 |page=4 |via=Newspapers.com}}</ref> State funding for a replacement water tunnel was approved in August 1950.<ref>{{cite news |url=https://www.newspapers.com/clip/74451150/the-boston-globe/ |title=How State Will Expend $394,000,000 |newspaper=Boston Globe |date=August 20, 1950 |page=31 |via=Newspapers.com}}</ref><ref>{{cite news |url=https://www.newspapers.com/clip/74451176/the-boston-globe/ |title=Dever Signs State Market Authority Bill |newspaper=Boston Globe |date=August 10, 1950 |page=14 |via=Newspapers.com}}</ref> On January 28, 1951, six people in a wedding party died when they drove onto the Charlestown end of the closed bridge and fell into the river at the open north draw.<ref>{{cite news |url=https://www.newspapers.com/clip/74450492/the-boston-globe/ |title=Inquiry Is Expected in Drawbridge Deaths |newspaper=Boston Globe |date=January 30, 1951 |page=3 |via=Newspapers.com}}</ref><ref>{{cite news |url=https://www.newspapers.com/clip/74450968/the-boston-globe/ |title=Mystic Pier Highway Asked to Replace "Death" Viaduct |newspaper=Boston Globe |date=February 1, 1951 |page=7 |via=Newspapers.com}}</ref> The north draw and the north section of the viaduct were removed in 1954.<ref>{{cite news |url=https://www.newspapers.com/clip/74451058/the-boston-globe/ |title=Demolishing Chelsea Viaduct Bridge |newspaper=Boston Globe |date=August 8, 1954 |page=93 |via=Newspapers.com}}</ref> A new street, Terminal Street, opened on August 21, 1956, to serve the Mystic Wharf; the old south draw was closed at that time and soon removed.<ref>{{cite news |url=https://www.newspapers.com/clip/74450265/the-boston-globe/ |title=Terminal St. Opened; City Abandons Chelsea South Draw |newspaper=Boston Globe |date=August 22, 1956 |page=15 |via=Newspapers.com}}</ref> A new fixed bridge was built near the alignment of the former south draw in 1982 as part of a project to remove trucks from neighborhood streets in Charlestown.<ref>{{cite book |url=https://archive.org/details/chelseawaterstre00bost/page/n3/mode/2up |title=Draft Negative Declaration: Section 4(f) Statement |series=Chelsea–Water Streets Connector {{!}} Little Mystic Channel Crossing |publisher=Federal Highway Administration |date=June 17, 1977 |page=2 |via=Internet Archive}}</ref><ref>{{cite web |url=https://www.arcgis.com/apps/webappviewer/index.html?id=d42ae2ac2cb640ac992f763570ce10ed |title=Bridges Web Application |publisher=Massachusetts Department of Transportation}}</ref> It provides only {{convert|12|feet}} clearance above the water, as the only vessels using the Little Mystic Channel were recreational boats using a 1970s-built boat ramp.<ref>{{cite book |chapter-url=https://babel.hathitrust.org/cgi/pt?id=ien.35556031008238&view=1up&seq=480 |title=Final Environmental Impact Report (EOEA File Number 8695) and Final Environmental Impact Statement |volume=1 |series=Boston Harbor, Massachusetts: Navigation Improvement Project and Berth Dredging Project |page=A1-86 |chapter=Attachment 1: Affected Environment and Environmental Consequences Evaluated for Potential Dredging and Disposal Sites |date=August 19, 1995 |via=HathiTrust |publisher=United States Army Corps of Engineers}}</ref>