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

Case Dismissed! Brooklyn Judge Affirms DOT’s ‘Rational’ Right to Build Bike Lanes

The ruling preserves the 1.3-mile protected bike lane between Carroll Gardens and Downtown Brooklyn.

January 15, 2026

Memo to Mamdani: Data Shows Massive Jump in Ridership on Bedford Avenue’s Embattled Bike Lane 

Hardened bike infrastructure increases the number of cyclists on the road — and here are the numbers to prove it.

January 15, 2026

Mamdani Must Reverse Adams Putting Cars on Park Roads: Advocates

It's time to undo Adams's car-first maneuvers, parks advocates said.

January 15, 2026

City Playing Catch-Up Amid E-Micromobility Surge on City Streets, Coalition Says

Local micromobility start-ups want Mayor Mamdani to take their industry seriously and make it easier to ride an e-bike in NYC.

January 15, 2026

Thursday’s Headlines: Affordability for Whom Edition

The honeymoon is definitely over, as you can see by the resetting of our bespoke Mamdani-O-Meter back to zero. Plus other news.

January 15, 2026

Gov. Hochul’s Uber-Backed Car Insurance ‘Reforms’ Threaten Payouts To Crash Victims

Hochul wants to limit payouts to crash victims under the guise of "affordability" and bogus claims about "staged crashes."

January 14, 2026
See all posts