What is the tunnel that goes underwater in Boston?

The Ted Williams Tunnel Named for the Boston Red Sox Legend, the tunnel doubles Boston's cross-harbor tunnel capacity from four lanes to eight. The . 75-mile underwater part of the 1.6 mile tunnel used a dozen steel tube sections, each longer than a football field.



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The Sumner Tunnel was opened on June 30, 1934. It carried traffic in both directions until the opening of the parallel Callahan Tunnel in 1961. The Sumner Tunnel is named for William H. Sumner, the son of Governor Increase Sumner.

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WASHINGTON, July 10 — The ceiling collapsed in one of Boston's Big Dig tunnels a year ago, killing one woman, because builders used the wrong epoxy to hold the anchor bolts in place, the National Transportation Safety Board said Tuesday.

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Opened to traffic June 30, 1934. It was originally a two-way road that carried traffic in both directions, until the opening of the parallel Callahan Tunnel in 1961. The tunnel is 8,448 feet long, of which approximately 3,960 feet are underwater.

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The Ted Williams Tunnel The . 75-mile underwater part of the 1.6 mile tunnel used a dozen steel tube sections, each longer than a football field. These were placed into a trench on the Boston Harbor floor and were then connected.

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It was originally a two-way road that carried traffic in both directions, until the opening of the parallel Callahan Tunnel in 1961. The tunnel is 8,448 feet long, of which approximately 3,960 feet are underwater. In 2017, the state removed the tollbooths as part of a switch to electronic tolling.

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The first of three underwater crossings beneath Boston Harbor, the Sumner Tunnel, was named after William Hyslop Sumner and opened on June 30, 1934.

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The Sumner Tunnel is undergoing a restoration that began in the spring of 2022. This work requires the tunnel to be closed to traffic periodically.

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The National Transportation Safety Board determines that the probable cause of the July 10, 2006, ceiling collapse in the D Street portal of the Interstate 90 connector tunnel in Boston, Massachusetts, was the use of an epoxy anchor adhesive with poor creep resistance, that is, an epoxy formulation that was not capable ...

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Perhaps ironically, the Blue Line takes several points of pride from its proximity to water, which gives it its name. Local historians claim the tunnel that runs under the harbor as the first underwater subway tunnel in the United States.

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The Big Dig was the most expensive highway project in the United States, and was plagued by cost overruns, delays, leaks, design flaws, charges of poor execution and use of substandard materials, criminal charges and arrests, and the death of one motorist.

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It's the lone tunnel that goes underwater in Virginia, although there are several other bridge tunnels in the state. And while you won't be able to ogle marine life from your car window on your drive... rest assured you are indeed well below the surface!

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The Seikan Tunnel is the world's longest undersea tunnel by overall length (the Channel Tunnel, while shorter, has a longer undersea segment).

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