Review Begins Of Falling Concrete In Big Dig Tunnels

Sixty signs of loose bolts and other potential failures are found in the same Big Dig tunnel where a motorist was crushed by 12 tons of falling concrete.

1 minute read

July 14, 2006, 7:00 AM PDT

By Chris Steins @planetizen


"The widespread trouble spots prompted the Turnpike Authority to order an inspection of the city's entire highway system -- even parts that are decades old and not part of the $14.6 billion Big Dig system, the nation's most expensive highway project.

In May, federal prosecutors brought the first criminal charges in the trouble-plagued Big Dig project against six men who worked for the project's largest concrete supplier, accusing them of falsifying records to hide the inferior quality of concrete.

...Commuters waited years for the Big Dig to bury the city's antiquated central artery and send traffic underneath downtown. But the accident has raised new questions about the project."

Thursday, July 13, 2006 in CNN

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

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

Hot air balloons rise over Downtown Boise with the State Capitol building visible amidst the high rises.

The Five Most-Changed American Cities

A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.

April 23, 2025 - GoodMigrations

A large Google data center building in the Netherlands.

Rethinking Computing: Researchers Tackle AI’s Energy Demands

USC researchers are reimagining how AI systems are trained and powered — through smarter algorithms, innovative hardware, and brain-inspired designs — to dramatically reduce computing’s energy footprint.

May 4 - USC News

Close-up of smartphone with Zoox logo and screen with blurred image of Zoox autonomous vehicle in background.

Amazon-Owned Robotaxis to Begin Testing in LA

Los Angeles will become the sixth city where Zoox is testing its autonomous vehicle technology.

May 4 - Smart Cities Dive

NYC MTA train on elevated rail with Manhattan skyline visible in background.

New York MTA Says No More Borrowing, Will Cut Costs Instead

The agency says it won’t take out any new loans to finance its planned improvements and is finding other ways to cut costs.

May 4 - Bloomberg CityLab

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.

Senior Manager Operations, Urban Planning

New York City School Construction Authority

Building Inspector

Village of Glen Ellyn

Manager of Model Development

Central Transportation Planning Staff/Boston Region MPO