Bertha Awakens—New Hope After a Two-Year Delay for Seattle Tunnel-Boring Machine

Baby steps are an improvement for the tunnel-boring machine known as Bertha. The drill moved a total of 1.5 feet this week, but the symbolic distance probably felt like a mile.

1 minute read

December 27, 2015, 11:00 AM PST

By James Brasuell @CasualBrasuell


Seattle Tunnel Boring

Ben Brooks / flickr

"Workers at the Seattle waterfront switched on the power to the world’s largest boring machine and revved it forward early Tuesday," reports Mike Lindblom, "bringing hope to the Highway 99 tunnel project after a two-year delay."

Bertha had a breakthrough moment back in February when it moved far enough to remove a section of the drill for repairs.

The most recent development in the saga, moving the drill forward 1.5 feet, is considered a test. But this test has a particularly critical air to it according to Linblom: "Government agencies lack a Plan B, so failure is not an option.

Buried at the bottom of the article are some of the details of fallout fro the two-year delay, including the cost of the repairs:

"The main partners, Dragados USA of Spain and Tutor-Perini of California, have said in court documents that overall costs for repair, including excavation of the giant repair-access vault, are expected to exceed $143 million. It could take years for STP, Hitachi Zosen, their insurers, and Washington state to sue or negotiate who pays for repairs and delays, beyond the basic $1.35 billion STP contract."

Tuesday, December 22, 2015 in The Seattle Times

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Concrete Brutalism building with slanted walls and light visible through an atrium.

What ‘The Brutalist’ Teaches Us About Modern Cities

How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

February 28, 2025 - Justin Hollander

Complete Street

‘Complete Streets’ Webpage Deleted in Federal Purge

Basic resources and information on building bike lanes and sidewalks, formerly housed on the government’s Complete Streets website, are now gone.

February 27, 2025 - Streetsblog USA

Downtown Los Angeles skyline at sunset with new 6th Street Viaduct arches in foreground.

Downtown Los Angeles on the Rise: A Promising 2025

Fueled by new developments, cultural investments, and a growing dining scene, downtown Los Angeles is poised for significant growth in 2025, despite challenges from recent wildfires and economic uncertainties.

February 21, 2025 - Los Angeles Downtown News

Two pastel green/blue front doors on duplex with decorative wreaths.

How Single-Family Conversions Benefit Both Homeowners and Cities

Converting single-family homes to triplexes can ease the housing crisis and offer affordable, flexible options for more households. Why is it largely illegal?

2 minutes ago - Strong Towns

Electric Cars

Report: Transportation Equity Requires More Than Electrification

Lower-income households often lack the resources to buy electric cars, signaling a need for a more holistic approach to improving mobility and lowering transportation costs.

1 hour ago - Smart Cities Dive

Informational plaque in front of paved walkway next to tall green trees in Black Hawk State Historic Site, Illinois.

Supporting Indigenous Land Reclamation Through Design

Harvard students collaborated with the Sac and Fox Nation to develop strategies for reclaiming and co-managing ancestral lands in Illinois, supporting Indigenous sovereignty through design, cultural storytelling, and economic planning.

2 hours ago - Harvard GSD

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.