Long Awaited Green Line Extension Opens Today North of Boston

The Green Line Extension project, in the works for decades, is now providing rail transit service from Boston north into Somerville.

1 minute read

March 21, 2022, 11:00 AM PDT

By James Brasuell @CasualBrasuell


A map showing the route of a light rail transit line from Boston up through Somerville and Medford.

Commonwealth of Massachusetts / The Green Line Extension project map.

The Union Square Branch of the Green Line Extension Project, with service to Somerville, opens today in Massachusetts.

An article by Adrianna MacNeill previewed this milestone event for the decades-long Green Line Extension Project (GLX), noting the new access to transit offered to public transit by the new rail line's opening. MBTA spokesman Joe Pesaturo is quoted in the article saying: "When both branches of GLX are open, 80% of Somerville’s population will be within walking distance of a rail station. Today, that figure is only 20%."

The other branch Pesaturo is referring to is the Medford Branch, which is expected to open this summer. "In all, there will be six new stations, as well as a reconstructed and relocated Lechmere station. The new stations include Union Square on the first phase, plus East Somerville, Gilman Square, Magoun Square, Ball Square, and College Avenue stations as part of the second," reports MacNeill.

The source article, linked below, includes more detail on the long history of planning leading up to today's historic opening, as well as the most recent history of delays from the past several years. For more background, see also articles previewing the opening, published earlier this year by the Boston Globe and Boston.Com.  

Friday, March 18, 2022 in Boston.com

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

Skyscrapers in Jersey City.

New Jersey’s second-largest city bans standalone data centers

Jersey City will continue to allow co-location facilities, such as those meant for research institutions that store their own data.

September 4, 2026 - The Cool Down

A New Jersey train approaches people waiting at the station.

Amtrak not solely to blame for New Jersey commuter rail's unreliability, report finds

A new study from the Garden State Initiative found that NJ Transit’s budget grew 20% across a 4 year period, but reliability declined significantly over the same period.

September 15 - Mass Transit

A tall, gray power plant billows smoke into a blue sky.

EPA erases limits on planet-warming pollution from power plants

Under Monday’s plan, power plants would still have some limits on how much mercury, arsenic and other contaminants they can emit.

September 15 - New York Times

A white RAPID bus. The lower half is light blue, and says RAPID in purple text. The bus is half visible, appearing from the left side of the image.

Phoenix announces new on-demand transit service, more frequent RAPID buses

Both new services will launch in October, and are part of Phoenix's Project Effective Access Solutions for Easing Congestion.

September 15 - KJZZ

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.