Skip to Content
Streetsblog New York City home
Streetsblog New York City home
Log In
Department of Buildings

Study: Scaffolding Pushes Pedestrians Into The Street

Pedestrians forced into the street while walking through Fulton Mall. Photo: Numina

"I'm walkin' in the street here!"

New York's omnipresent construction scaffolding does more than give concert promoters a place to put up their posters — it makes pedestrians more than 50 percent more likely to veer into the street, data from a local mobility company shows.

The company, Numina, quietly published its findings earlier this year, but CEO Tara Pham presented the data at an industry summit in Manhattan on Thursday, telling transportation wonks how the company's sensors on a scaffolding on Fulton Mall and Flatbush Avenue in Downtown Brooklyn showed that pedestrians were 53 percent more likely to mingle with buses, trucks and cars when the sidewalk was cut off by scaffolding.

Pham said her company did the analysis to quantify pedestrian behavior in cities.

"It's usually pedestrians and bicyclists that have been left out of planing from a data perspective," Pham told the audience of muckety mucks at a Crain's breakfast.

In a city with 332 miles of scaffolding at last count, the way the walls restricts pedestrian movements or puts them in harm's way has been a seemingly intractable problem. The amount of scaffolding in New York City has increased, from 280 total miles to over 330, since a 2017 New York Times story on city residents' frustration with scaffolding and the de Blasio administration's attempt to fight scaffold sprawl by keeping better location data. And it has even risen since Council Member Eric Ulrich wrote an editorial calling on the city to "tackle the scaffolding scourge" in April 2019.

In that editorial, Ulrich wrote that there were over 8,300 scaffolds totaling 1.45 million linear feet. As the latest numbers from the Department of Buildings show, those numbers have both increased, to 9,200 sheds totaling 1.75 million linear feet.

Pham said that the data had "huge implications" at Thursday's breakfast. In the blog post explaining the findings, Numina's Jennifer Ding suggested that the city work on things like "better signage to inform pedestrians early on of a road closure, temporary pedestrian refuges or mid-block crosswalks at busy intersections" to mitigate the effects of construction on pedestrian movement.

Stay in touch

Sign up for our free newsletter

More from Streetsblog New York City

Cyclists Still Getting Criminal Summonses — And Mayor Mamdani Is Still Waffling

Another day, another criminal sting against cyclists — and another day of Mayor Mamdani blowing off questions about why he is continuing a policy of his predecessor that he says he opposes.

February 12, 2026

Mamdani Pitches Free Buses (Cheap!) Plus Other Transportation Needs on ‘Tin Cup’ Day in Albany

The mayor gave his former colleagues in state government a glimpse of his thinking on transportation and city operations, and hopes they can send more cash his city's way.

February 12, 2026

‘Everyone’s At Fault’: Mamdani and City Council Point Fingers Over Lowering Speed Limits

The mayor and the City Council are using the "art of deflection" to keep the status quo instead of lowering the speed limit to a safer 20 miles per hour.

February 12, 2026

Report: Pedestrians Are At Risk … Where You’d Least Expect It

The city may be underestimating number of outer borough pedestrians and is biased towards Manhattan, a new report finds.

February 12, 2026

Thursday’s Headlines: Down With DSPs Edition

Council Member Tiffany Cabán will reintroduce a bill taking on Amazon's use of third-party delivery companies. Plus more news.

February 12, 2026

Data: New Yorkers Keep Biking In This Cold, Cold World

Even in the city's historic deep freeze, New Yorkers are getting around by bicycle, according to publicly available data.

February 11, 2026
See all posts