Modal Friction on the Brooklyn Bridge

The popularity of crossing New York City's second oldest bridge by foot and pedal is causing friction between the two modes on the promenade above six lanes of motor vehicle traffic. A report released for NYCDOT proposes recommendations.

3 minute read

December 14, 2017, 5:00 AM PST

By Irvin Dawid

Brooklyn Bridge

Christian Mueller / Shutterstock

Pedestrians and cyclists wishing to experience a scenic, but much less crowded river crossing might consider the city's oldest river crossing, which reopened in June 2015, as an alternative not only to the Brooklyn Bridge, which opened in 1883, but the crowded High Line where bikes are prohibited.

Unlike the High Bridge and the High Line, though, the Brooklyn Bridge serves as a critical commute corridor between two of New York's most populous boroughs, and the limited promenade, 10-feet wide at its narrowest point according to Transportation Commissioner Polly Trottenberg in this August 2016 New York Times video, has created friction between the three users: cyclists, pedestrians, and vendors.

Furthermore, the iconic bridge also doubles as the top tourist attraction in Brooklyn, and ranks fifth in New York City, according to an engineering report released this month, "Brooklyn Bridge Promenade — Recommendation Report" [pdf] for the New York City Department of Transportation, and that has created serious promenade congestion. The report was commissioned in August 2016 in part to see if the promenade could be widened

"From 2008 to 2015 pedestrian volumes increased 275% on weekends and cyclists increased 104%," according to the report by the consulting firm, AECOM.

"In response, the New York City Department of Transportation is taking a series of steps to relieve congestion on the Brooklyn Bridge, including possibly creating a separate bike-only entrance to the bridge on the Manhattan side and limiting the number of vendors and where they can sell on the promenade," reports Winnie Hu for The New York Times on Dec. 8.

The report does not recommend widening the promenade for the same reason many transportation advocates oppose widening freeways – it creates induced demand, "add[ing] more weight to the bridge, which could be a problem," writes Hu.

Aecom recommended an inspection of the bridge’s cables before considering any deck expansion, according to the report. The cables, which are original [including the inferior ones installed by the shady contractor, J. Lloyd Haigh,] had already been scheduled for a full inspection in 2019, the first since the 1980s.

The report did make some near-term recommendations, including a separate bike access [pdf] from Manhattan which "would divert cyclists from the heavily crowded entrance to the bridge...The city would create this bike entrance by converting a vehicle exit ramp on Park Row that was closed after the Sept. 11 terror attacks..."

The report also ruled out a more controversial approach that would turn an existing vehicle lane into a roadway bike lane — something that has been called for by cyclists, transportation advocates and urban planners. The report said that it raised safety concerns, would be difficult to maintain, and would lead to traffic backups.

That recommendation didn't sit well with Paul Steely White, the executive director of Transportation Alternatives, an advocacy group.

“Improving the entrances is welcome, but you’re not doing enough to address the core problem that there is not enough space for pedestrians and bikers on the bridge itself,” he said. “Generally, cars are still coming first and bikers and pedestrians are left to fight over the leftovers.”

In 1950, trolley tracks on the bridge were removed and traffic was restricted to passenger vehicles, notes the history section (page 5) of AECOM's 19-page powerpoint presentation [pdf].

The photos by Edu Bayer that accompany the article allow the reader to visualize the many problems that occur between the three users of the bridge, but it's the friction between pedestrian and cyclists that can be unsettling.

“I’m always looking on the side because I never know when I’m going to get hit by a bike," stated one pedestrian in Hu's earlier article (posted here) on promenade congestion.

Friday, December 8, 2017 in The New York Times

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