Walk the Promenade this month and you'll hear two different conversations happening at once. One is about a $3.5 to $4 billion infrastructure plan that Mayor Zohran Mamdani and NYC DOT Commissioner Mike Flynn unveiled on August 24, covering the mile and a half of city-owned highway between Atlantic Avenue and Sands Street known as BQE Central. The other, quieter conversation, mostly happening among people who've lived here long enough to remember the last fight, is that this plan looks a lot like something the neighborhood already drew up itself, back in 2019.
That second conversation is the one worth having if you actually live under this highway.
According to reporting from Streetsblog, the temporary bypass at the center of Mamdani's proposal largely mirrors a design that architect Marc Wouters drafted for the Brooklyn Heights Association in 2019, when the neighborhood was fighting off a Bill de Blasio-era plan to run a six-lane highway across the Promenade itself during construction. DOT even floated a version of the parallel-bypass concept in its own 2022 workshop materials. So the headline this August wasn't a new idea. It was the city finally picking an option the community had been pointing to for years.
That matters for how you read everything else in this story. The plan didn't materialize from a blank slate in a mayor's office. It's the third pass at solving the same structural problem, and the interesting part isn't that a bypass exists. It's what's different about this version compared to the one that got shouted down in 2018.
What's Actually Different This Time
The de Blasio-era proposal would have put the temporary roadway on top of the existing highway, at Promenade level, turning the walkway itself into a construction-era stand-in for six lanes of traffic. Residents killed that plan.
This version sits lower. DOT spokesperson Nick Benson told Streetsblog the new bypass will only reach the height of the existing Queens-bound platform of the triple cantilever, and it's narrower: two lanes with no shoulder, about 28 feet wide for most of its run along Furman Street, widening to roughly 40 feet only where it needs room for the Atlantic Avenue on-ramp. It runs from Atlantic Avenue to Columbia Heights, at which point a second, still-undesigned elevated bypass would carry traffic over the Brooklyn Bridge approach toward the Manhattan Bridge.
The city's own FAQ document is specific on one point that tends to get lost in headline coverage: this is a rehabilitation, not a rebuild. The highway stays at two lanes in each direction. It will not be widened, and the interchanges will not be altered. That last detail became a genuine sticking point when Kelly Carroll, executive director of the Atlantic Avenue BID, told Brooklyn Paper she was disappointed the plan doesn't touch the exit ramp at Atlantic Avenue, which she called a "nightmare strip" where cars regularly speed off the highway and where families cross on foot every day to reach Brooklyn Bridge Park.
What This Means for the Walk You Actually Take
If you use the Promenade to get to the park, walk a dog along Columbia Heights, or cut through toward Fulton Ferry, here's the honest read on timing. Nothing changes on the ground this year, or next year, or for several years after that. Construction isn't scheduled to start before 2030, and the rehabilitation is expected to run about a decade, extending the highway's usable life by roughly 40 more years.
During that construction window, DOT's commitment is that portions of the Promenade will stay open "to the extent feasible," a phrase that also covers the nearby parks. The Harry Chapin Playground, tucked near Columbia Heights, is slated for reconstruction as part of the overpass work in that same area, according to DOT's project FAQ. None of this is happening in isolation from the rest of the corridor. The city notes it will keep working with New York State, which controls the highway's other 10.6 miles through Brooklyn, on longer-term plans for the sections outside this stretch.
The structure itself carries about 130,000 vehicles a day, roughly 13,000 of them trucks, and the mayor's office says it's now 20 years past its design life. City officials have also put a number on waiting: every year the project is delayed adds an estimated $160 million to the eventual cost.
The Reactions Split Along a Familiar Line
Two Brooklyn Heights residents captured the split well in a Gothamist interview conducted on the Promenade the week the plan was announced. Jules Briody, who has lived in the neighborhood for three years, pointed to flooding on the lower roadway as a reason the work is overdue, saying she thinks it's "kind of necessary." Colleen Boyeen, a longer-term resident, was blunter about the tradeoff, noting the current structure is "patched up with wire" even as she acknowledged that whatever happens will disrupt the neighborhood.
Lara Birnback, executive director of the Brooklyn Heights Association, the same group that commissioned the 2019 Wouters design now echoed in this plan, told Brooklyn Paper her organization is "not interested in being obstructionist for the sake of being obstructionist." Her line on the situation: "I'm excited, let's get this going again. Maybe the third time will be the charm." At the same time, she pushed back on the idea that fixing the highway is the same as solving it, telling Streetsblog there's an opportunity here for New Yorkers who don't drive at all, and asking whether anyone really wants to see this highway still running in 2080, which is roughly where the math lands if a 10-year rehab starting in 2030 buys another 40 years.
That tension, between residents relieved the Promenade itself was spared and advocates who think locking in a highway for another half century is its own kind of cost, is the actual state of opinion in the neighborhood right now. It isn't unanimous, and it isn't resolved.
The Part of the Calendar That Actually Matters
Here's where the two clocks in this story diverge. The construction clock doesn't start ticking until 2030. The clock that matters for anyone who wants a say in the design starts this fall.
NYC DOT is preparing to open the City Environmental Quality Review process, the formal environmental review that will study construction impacts, traffic, noise, air quality, and effects on parks and historic resources along the corridor. Before the official public comment period opens, DOT's own project page lists two virtual sessions open to the public: one on Tuesday, October 6, 2026 at 7 p.m., and another on Thursday, October 22, 2026 from 11 a.m. to noon. In-person pop-up events are also planned, with details to be posted as they're finalized.
Those October sessions are informational, not the formal comment window. That window, the CEQR public scoping period, opens later this fall, and it's the only point where the public can weigh in on what the environmental impact statement should actually study before DOT locks in a design. The city expects to finish that environmental impact statement by summer 2028, two years before a shovel is scheduled to go in the ground.
There's also a procedural detail worth knowing if you want to understand why this still isn't settled. Building the Furman Street bypass over parkland requires the city to go through the Uniform Land Use Review Procedure in City Council, and separately requires approval from the state legislature to use that parkland at all. Both of those steps are still ahead. The plan announced in August is a proposal moving into review, not a finished blueprint.
If you live here and only take one thing from this fall's news cycle, it should be this: the design that gets built in 2030 is still being shaped right now, in a review process most residents will never hear about unless they're already looking for it. The plan on paper today already borrows heavily from what the neighborhood itself proposed six years ago. What happens in the next two years of environmental review will determine whether the version that finally gets built solves the problems Carroll and Birnback are still raising, or just repeats the same compromise in a slightly lower, slightly narrower form.
Brooklyn Heights has weathered three rounds of BQE planning without losing what makes the neighborhood work, from the brownstone blocks around Pierrepont Street to the Promenade itself. If you're thinking about what a home here is worth against the backdrop of a decade of infrastructure work, or you just want a neighbor who's been tracking this closely, Varun Sharma is a good person to call.
