Carl Barron Plaza Is Open Again. Now Central Square Has to Keep It Busy.

On Friday, October 2, after the speeches and the ribbon-cutting, the crowd at Carl Barron Plaza stood and applauded as officials opened the space. Behind them, people lined up for free sandwiches and lemonade and a band started playing. That's how the Cambridge | Somerville Independent described the afternoon. Several people stopped to read the new marker dedicated to the plaza's namesake.

That ended nearly three years of fencing at the corner of Mass Ave, Western Ave, River Street and Prospect Street. The finished plaza is built to work as a venue. Its centerpiece is built to hold performances, and the people running it have said plainly that construction was only the first step. Whether the corner works now depends on a weekly calendar. The acts on that calendar mostly already work within a few blocks of 632 Mass Ave.

A Plaza Built Around a Stage

The plaza was rebuilt as the endpoint of the River Street Infrastructure and Streetscape Project, a $25 million city effort that runs from Memorial Drive up to Central Square. Construction started at the end of 2023. Community outreach on the design began back in 2018. Before this, the plaza hadn't had a major rebuild since it opened in the late 1980s. Supervising engineer Jerry Friedman told Cambridge Day that by then its sewers, water mains and drains had worn out, its trees were declining, and the brick plaza didn't have enough lighting.

Compared with the old layout, the new plaza has:

• About 50 percent more seating
• More than twice as many trees
• A separated bike lane
• Reconfigured MBTA bus stops with custom shelters and real-time arrival information

The feature that tells you how the plaza is supposed to be used is The Ribbon. It's a sculpture that winds through the space and works as seating, lighting and a stage, with programmable lights so it stands out day or night. Artist Sophy Tuttle painted it with "Riparian Ribbon," a mural based on the plants and animals of the Charles River. Friedman told Cambridge Day the old design didn't show that "Central Square is the arts and cultural district of Cambridge."

The Central Square Business Improvement District has said the stage needs regular acts. BID president Michael Monestime told Cambridge Day before the opening, "The physical improvements are definitely the foundation, but the plaza is going to need consistent care and activity to really make it successful."

Opening Week Drew From Within a Few Blocks

The BID named its free programming series Under the Ribbon. It planned a weekly rhythm with something different each day, instead of a few big events. The first full week, October 6 through 10, shows where that programming comes from. Several of the acts already had a base in Central Square.

Some of these connections are close. Central On Air is the BID's own online DJ station, broadcasting from a storefront on Mass Ave in the Market Central stretch. WBUR covered it this spring. Its site describes DJ Rayvino as a deep-house, junglist and hip-hop DJ. Cini Coffee was founded by Nefisa Siraj to bring Ethiopian coffee culture to Boston. It roasts Ethiopian beans in small batches and its website lists it at the Central Square Farmers Market on Mondays. Majestic Community Wellness offers trauma-informed movement and mindfulness classes, and The Dance Complex is down the block.

So the plaza isn't bringing in a new crowd from somewhere else. It's taking the square's existing DJs, coffee and classes and putting them on the corner where Mass Ave and River Street meet, at hours when people are already walking past. In the BID's words, the goal is "more reasons to stop, stay and spend time in Central Square."

The Calendar Matters as Much as the Construction

The plan is ambitious. At the opening, Monestime said the goal was "programming in the plaza five days a week," with live music, DJs, buskers, food trucks and local vendors. He told Cambridge Day that programming would change with the seasons and could include themed days like "Wellness Wednesdays," plus live music on Thursdays and Fridays. He also called the first stretch a test. "We're going to test this out and pilot this and really work for success to be the outcome," he said, "and then continue to keep that cadence and help keep the plaza alive."

As of mid-October, the Under the Ribbon page still lists dates only for opening week. It says programming will continue through the fall, with new partners and seasonal activities added, and tells readers to check back. The city and BID have said they'll post an events calendar on the city's website and on a poster at the plaza. For now, the poster at the plaza and the BID's neighborhood calendar are the places to check.

The square has been through this before. Starlight Square, the outdoor event space that opened during the pandemic, was closed by the city in July 2024 even though the BID opposed the closure. Monestime called the plaza "completely different," saying it "was a gathering space well before Starlight." He also said the BID's relationship with city government is "stronger than ever." Starlight was a temporary setup on a parking lot. The Ribbon is permanent, wired for lighting and part of the street. It isn't going anywhere, whether or not the five-day schedule holds into winter.

The Corner Around It Is Still Under Construction

The plaza reopened before the project around it was finished. The city's River Street project schedule has crews working on the River Street bus shelter at the plaza during the weeks of October 19 and October 26. Curb, sidewalk, utility and tree-planting work also continues along River Street toward Memorial Drive, including new trees between Mass Ave and Fairmont Street. If your bus stop or your walk to the Red Line still runs past cones this fall, that's why.

Storefronts are changing too. What A Soup at 125 River Street closed on October 10. Boston Restaurant Talk reported that EN'YA Robatayaki & Sake Bar is planned for the space. WhatNow reported that the same owners are behind it and expected it to open before the end of November. The menu will be built around charcoal-grilled skewers, ramen, katsu curry and sake. A co-owner told WhatNow they wanted to bring the izakaya experience to the local community. An evening restaurant and sake bar on River Street fits the night hours the BID is trying to fill with Thursday and Friday music.

The Name on the Marker

Carl F. Barron was a longtime Central Square business leader and philanthropist, known as the neighborhood's unofficial mayor. He spent more than 70 years in business with Barron Furniture, which grew into a national furniture rental business, and he died in 2014 at 98. His son, Kenneth Barron, is a longtime property owner who helped form the Central Square BID. At the opening, he said the family's ties to Cambridge go back five generations. The marker carries his father's words:

"The foundation of a strong and diverse community is based upon respect, trust and fellowship. Connecting with people is being involved."

Kenneth Barron said his father "would have loved seeing people use it," and added, "He might also have a thing or two to say about the pigeons."

Two Thursdays That Ran Through the Plaza

For Thursday, October 22, the BID set up its annual meeting as a walk called Destination: Central. It starts at Cambridge City Hall, and attendees choose routes with stops at Carl Barron Plaza, Graffiti Alley, Central On Air, The Dance Complex and Street Theory Collective.

On Thursday, October 29, from 5 to 8 p.m., the city holds a drop-in open house on its Central Square rezoning recommendations at Street Theory Collective, 541 Mass Ave. The city says it will present the recommendations there before sending them to the City Council, post the materials online for public comment, and provide food. Street Theory Collective is a nonprofit gallery, artist residency and coworking space supporting underrepresented creatives, a few blocks from the plaza.

At Moving Greater Boston, we follow corners like Carl Barron Plaza because they shape what a Central Square address is like day to day, from the bus shelter out front to the music on a Friday evening. If you're thinking about buying or selling near Mass Ave and want someone who knows what's opening on these blocks, Buy With Us or Sell With Us.