The bridge is a three-span cantilevered truss bridge at 1,525 ft (465 m) in total length. The center span is longest at 800 ft (240 m) and the maximum truss height is 115 ft (35 m). There are 36 approach spans to the north and 32 to t… See more

Early transport between Boston and Winnisimmet (later Chelsea) was by the Winnisimmet Ferry. In 1803, the Salem Turnpike was extended across the Mystic River to Charlestown, where the Charles River Bridge then … See more

The current bridge has not been spared having numerous incidents during its 50 plus year lifespan. In 1973, a gravel truck traveling over the lower deck crashed into a support, collapsing the upper deck onto the truck and ki… See more

• massport.com: Tobin Bridge
• BostonRoads.com See more