![](/sites/default/files/pictures/full/no-image-360.png)
Also known as the Mystic River or Chelsea Bridge, the Tobin Bridge was officially opened in February 1950, facilitating a major automobile route into Boston from the north while not interrupting the shipping traffic in the river below. The steel double-deck cantilevered bridge measures 11,880 feet in length and provides a panoramic view over Charlestown, Everett, Chelsea, and the Mystic River entrance into Boston Harbor. Directly north of the bridge on the Charlestown shore lies the United States Gypsum Company (50 and 200 Terminal Street), built beginning in the 1920s and a reminder of the heavy industrial uses that still survive along the Boston waterfront.