What are the three tunnels in Boston?
What are the three tunnels in Boston? The tunnels involved are the Thomas O'Neill Tunnel that carries Interstate 93 underneath downtown Boston, the Ted Williams Tunnel that ferries drivers along Interstate 90 east and west across the harbor, and the westbound Sumner and eastbound Callahan Tunnels linking Boston and East Boston.
Which Boston tunnel goes to Logan Airport?
Built in the 1930s, the Sumner Tunnel (Route 1A South) is the first traffic tunnel in Massachusetts and takes vehicles from Logan Airport to Boston/I-93.
What is the oldest tunnel in Boston?
The Tremont Street subway in Boston's MBTA subway system is the oldest subway tunnel in North America and the third oldest still in use worldwide to exclusively use electric traction (after the City and South London Railway in 1890, and the Budapest Metro's Line 1 in 1896), opening on September 1, 1897.
Why is Sumner Tunnel closed?
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.
Does Callahan tunnel go both ways?
It carries motor vehicles from the North End to Logan International Airport and Route 1A in East Boston. Ordinarily, this tunnel is only used to carry traffic out of the city, and with the completion of the Big Dig it only collects traffic from I-93 southbound and downtown Boston.
What tunnel in Boston is underwater?
The Ted Williams Tunnel interface in East Boston between the land-based approach and the underwater section is 90 feet below the surface of Boston Harbor, the deepest such connection in North America. The project's seven-building ventilation system is one of the largest highway tunnel ventilation systems in the world.
What do the colors in the Boston tunnels mean?
The next time you're driving through one of the tunnels in Boston, take note of those tiles on the side of the road. If they're brown, it means you're under ground. If they're blue, you're under water.
How far underwater is the Callahan Tunnel?
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.
Was The Big Dig worth it?
There were some huge pros to the Big Dig: submerging the interstate cleared up some horrific traffic congestion (vehicles used to crawl for 10 hours a day), opened up 300 acres of land, and jumpstarted the Innovation District.
Is Sumner Tunnel same as Callahan Tunnel?
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.
What caused the Boston Big Dig tunnel collapse?
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.
When did the Boston tunnel collapse?
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 ...