Massachusetts Turnpike Authority

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News from the Turnpike Authority and our Meeting Calendar

Big Dig Project Background, Updates, Photos and Artist Gallery

Turnpike History and Turnpike Regulations

Contracts and Business Opportunities with the Turnpike

E-mail Form, Our Address and Phone Numbers

• Project Updates
• Parks and Urban Restoration
• Multimedia and Publications
• Project Background
  • Tunnels and Bridges
    • The Ted Williams Tunnel
    • The Charles River Bridges
  • Facts & Figures
  • Archaeology
  • Environmental
  • Engineering Marvels
  • Mitigation
  • Equipment
  • History

The Ted Williams Tunnel

TWT: Key Points

TWT Opens to traffic on schedule in Dec. 1995.

Connector Opens. The opening of the Mass Turnpike extension, January 2003. See key map of this area showing I-90 extension "connecting" to the Ted Williams Tunnel.

Open to All. This connection between I-90 and the Ted Williams Tunnel now allows all drivers to use the TWT and this new route.

Traffic Info. Sign up for the MassPike's free e-Traveler service to receive updates on the this and other tunnels, the CA/T Project and Mass Pike traffic.



The .75-mile underwater part of the 1.6 mile tunnel was built using a dozen steel tube sections, each longer than a football field, that were sunk into a trench on the Boston Harbor floor and connected together.  Read more about how the tunnel was built.

Now that connections to the Massachusetts Turnpike (I-90) and Route 1A are in place, use of the tunnel is open to all vehicles (with the exception of hazardous cargo). Unlimited use of the tunnel for "all" began in mid-January 2003 upon the opening of the Mass Pike extension, which connects to the Ted Williams Tunnel.

There are many photos of the TWT is our photo gallery. 

Learn about "smart highways" via the OCC in South Boston.

Among its many awards, the Ted Williams Tunnel has received a prestigious 1996 Biennial Award for "Excellence in Highway Design" . This is an award given by the U.S. Department of Transportation and the Federal Highway Administration (FHWA).