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  2. Bertha (tunnel boring machine) - Wikipedia

    en.wikipedia.org/wiki/Bertha_(tunnel_boring_machine)

    Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.

  3. State Route 99 tunnel - Wikipedia

    en.wikipedia.org/wiki/State_Route_99_tunnel

    The State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel in the city of Seattle, Washington, United States.The 2-mile (3.2 km), double-decker tunnel carries a section of State Route 99 (SR 99) under Downtown Seattle from SoDo in the south to South Lake Union in the north.

  4. Seattle tunnel, among world's biggest, takes step toward ...

    www.aol.com/news/2017-04-04-seattle-tunnel-among...

    Bertha, one of the world’s largest tunnel boring machines, emerged north of downtown Seattle on Tuesday.

  5. Washington State Route 99 - Wikipedia

    en.wikipedia.org/wiki/Washington_State_Route_99

    The tunnel portal includes ramps to and from nearby streets, including Dearborn Street, Alaskan Way, and a frontage road along the east side of the highway. [14] The tunnel travels 1.8 miles (2.9 km) under Downtown Seattle and carries SR 99 along the central waterfront, running roughly parallel to the former Alaskan Way Viaduct.

  6. ‘This Is Anything But Boring’: Seattle Names New Tunnel ...

    www.aol.com/entertainment/anything-boring...

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  7. List of tunnels in Seattle - Wikipedia

    en.wikipedia.org/wiki/List_of_tunnels_in_Seattle

    This is a list of tunnels built in the city of Seattle, in the U.S. state of Washington. The Puget Sound region, where Seattle lies, has a history of glaciation that has left many hills and ridges that civil engineers have needed to traverse for transportation and utilities. [1] Some of these tunnels are part of megaprojects.

  8. Alaskan Way Viaduct - Wikipedia

    en.wikipedia.org/wiki/Alaskan_Way_Viaduct

    The Alaskan Way Viaduct ("the viaduct" for short) [1] [2] [3] was an elevated freeway in Seattle, Washington, United States, that carried a section of State Route 99 (SR 99). The double-decked freeway ran north–south along the city's waterfront for 2.2 miles (3.5 km), east of Alaskan Way and Elliott Bay, and traveled between the West Seattle Freeway in SoDo and the Battery Street Tunnel in ...

  9. This woman is building a tunnel under her house and ... - AOL

    www.aol.com/news/woman-building-tunnel-under-her...

    A woman on TikTok has gained notoriety for an unusual home improvement project: digging a tunnel that is 30 feet long and 20 feet deep under her suburban home.