Ten Years Later: Evaluating the Big Dig

Ten years after the completion of the Central Artery and Tunnel project—or the Big Dig, as it's more commonly known—has the project become more justifiable?

2 minute read

December 30, 2015, 1:00 PM PST

By James Brasuell @CasualBrasuell


Anthony Flint takes a look back at the Big Dig—that infamous, long-delayed, well-over-budget project that created the most expensive highway in U.S. history.

After Flint spends a few paragraphs writing in a style close to prose poetry to describe the development process for the Central Artery and Tunnel project, we arrive to the present day—ten years after the official completion of the project. "How are we feeling now?" Flint asks. "Maybe there’s room for some grudging appreciation."

The feature length article provides background on the political and planning processes that lead up to the project before focusing on the outcomes of the project. On that latter point, Flint reports a mixed bag regarding the congestion relief pitched as a primary benefit of the project: "Looking at the new roadway system by itself, the Central Artery and Tunnel project is solving that problem [of congestion], with capacity to spare." Yet also, "[t]he theory of induced demand…has played out as predicted, particularly at the Ted Williams Tunnel, where traffic typically stacks up every evening trying to get to East Boston, Logan, and points north."

Flint also uses the perspective offered by the passage of town to analyze some of the design and execution of the project. One line sums up the analyses well: "for every triumph, there were gaffes." The article also includes evaluations about the potential transit investments that could have been funded with some of the project's $15 billion price tag as well as some of the project's benefits to the city's landscape, urban design, and development market. Flint concludes by considering whether the project could have been conceived and completed any other way. 

Tuesday, December 29, 2015 in The Boston Globe

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

Use Code 25for25 at checkout for 25% off an annual plan!

Interior of Place Versailles mall in Montreal, Canada.

Montreal Mall to Become 6,000 Housing Units

Place Versailles will be transformed into a mixed-use complex over the next 25 years.

May 22, 2025 - CBC

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.

7 hours ago - Diana Ionescu

Rendering of California High-Speed Rail station with bullet train.

California High-Speed Rail's Plan to Right Itself

The railroad's new CEO thinks he can get the project back on track. The stars will need to align this summer.

May 19, 2025 - Benjamin Schneider

Nevada State Senate building.

Nevada Legislature Unanimously Passes Regional Rail Bill

If signed by the governor, the bill will create a task force aimed at developing a regional passenger rail system.

3 hours ago - KRNV News 4

Blue sidewalk curb cut painted with white accessibility symbol.

How Infrastructure Shapes Public Trust

A city engineer argues that planners must go beyond code compliance to ensure public infrastructure is truly accessible to all users.

4 hours ago - Governing

Protester at Echo Park Lake, Los Angeles holding sign that says "Housing is a human right"

Photos: In Over a Dozen Cities, Housing Activists Connect HUD Cuts and Local Issues

We share images from six of the cities around the country where members of three national organizing networks took action on May 20 to protest cuts to federal housing funding and lift up local solutions.

6 hours ago - Shelterforce Magazine