Op-Ed: Here’s a Better, Cheaper and Safer 79th Street Rotunda Plan

DOT's redesign of the 79th Street rotunda omits protection for people attempting to access the country's most popular bike path. Image: DOT
DOT's redesign of the 79th Street rotunda omits protection for people attempting to access the country's most popular bike path. Image: DOT

The city Department of Transportation’s $150- to $200-million plan to rebuild the roundabout at 79th Street on the Upper West Side would make a dangerous piece of roadway worse for vulnerable road users.

This western end of 79th Street is a crucial access point to the Hudson River Greenway, the busiest bike path in the U.S. For decades, cyclists have been forced to mix it up with cars entering and exiting the West Side Highway.  The rotunda is a scary place for cyclists and most cyclists are too intimidated to even risk maneuvering in the motorized traffic flow.

The rotunda is a multi-level Robert Moses era structure that contains an underground parking garage and a plaza level with a restaurant and outdoor seating capped with a traffic circle which serves as both an exit from and an entrance to the West Side Highway. Along the outside of the structure are stairs on both sides which allow pedestrians to access the plaza safely, separated from traffic. In addition, the rotunda is the turnaround spot for the M79 bus.

Last renovated in the 1975, the 83-year-old rotunda is showing its age. For decades, the road surface of the roundabout has been pitted with potholes and in recent years the gouges in the road surface have been getting worse.

DOT presented its construction plans to Community Board 7 in October, and board members said the agency failed to address the issue of unsafe conditions for cyclists. CB7 asked DOT to revise the plan and come back with something better.

But when DOT returned in December, the agency offered no changes to the unsafe bicycling conditions in the plan. (Full disclosure: I was at the Dec. 17 meeting, and I was disappointed at DOT’s indifference to cyclist safety and the interests of the community in general.)

For example, DOT announced that for the three to four years of the construction, workers will occupy the two ballfields on W. 74th and 75th streets that are heavily used by Upper West Side kids — partly for staging, but partly, apparently, for parking for the construction workers. Members of CB7 are still trying to get confirmation of this statement.

It was clear that the DOT engineers knew that their proposal was unsafe. They said several times that the Manual on Uniform Traffic Control Devices didn’t allow bikes in traffic circles. But when faced with a known unsafe condition, the DOT staff and engineers seemed indifferent — in fact, making a big deal only about the part of the plan that calls for adding a railing to the top of the wall around the traffic circle. Such an improvement would bring the wall up to code. Never mind that no one has ever fallen over this wall — to these engineers, if the wall met the code, it was “safe.” The engineers seemed to content to live in their parallel reality of irrelevant, outdated engineering standards while ignoring the real life safety concerns of the community board and members of the neighborhood.

I have been biking through the roundabout on a nearly daily basis for most of the past 20 years.  I have experienced drivers honking and yelling at my children for having the temerity to bike to a soccer game in the park. I have had impatient drivers blindly pass another car only to be surprised to find me in the roadway. I have learned that by staying to the edge of the circle, I am generally able to stay out of the way of the aggressive drivers. When exiting the park, I pay attention to where a driver entered the traffic circle, so I can figure out who is going to W. 79th Street and who is going to accelerate onto the highway. I have even come to appreciate the field of potholes which act as a form of natural traffic calming.   

The traffic patterns in the DOT proposal would make things much worse. Instead of taking advantage of the full 31-foot width of the traffic circle to separate bikes as much as possible from cars, DOT’s proposal would occupy nearly half of the road width with a red high friction surface which would force the bikes and cars into one lane. I can tell you from personal experience that cars don’t like being stuck behind bikes and will frequently act impatiently and endanger the cyclists.

A quick Google search easily reveals the best practices for designing safe bike infrastructure at roundabouts. For those interested in reading more, I recommend this clipPart of what you will learn is that the key to designing safe traffic circles is removing the conflicts. Traffic circles are inherently complicated and unsafe. The key is design bike infrastructure that avoids these conflicts.   

After the disappointing CB7 meeting, I went home and realized that it would be easy to build bike connections around the rotunda that completely avoided the traffic circle. The original Robert Moses era design has these sorts of connections for pedestrians. All that is necessary is to build a parallel set of connections for cyclists. I have drawn where this bike connection would go in the image below.

The blue line represents the proposed safe, grade separated bike connection
The blue line represents the proposed safe, grade separated bike connection.


The proposed bike lane would run along this planted area.
The proposed bike lane would run along this planted area.

The proposed grade-separated bike connection runs into what seems like a solid wall. But on closer inspection this wall is fairly thin and covers an existing tunnel under the highway entrance ramp. This tunnel is currently used as an entrance to the underground parking garage. The garage entrance is extra wide and easily could accommodate a bike path next to the car access.  This garage entrance is extremely low traffic. In thousand of trips by this entrance, I have only seen a car entering a handful of times.

Here is the tunnel from the other side. Photo: Mark Gorton.
Here is the tunnel from the other side. Photo: Mark Gorton.


An up-close view of the inside of the tunnel which is currently a rarely used entrance to the underground parking garage. Photo: Mark Gorton
An up-close view of the inside of the tunnel which is currently a rarely used entrance to the underground parking garage. Photo: Mark Gorton

The extra costs of building this separated bike facility would be small compared to the rest of the project.   DOT is already proposing to install a handicapped access ramp along a path right next to where the bike lane would go. I suspect that the pedestrian ramp and the bike path could be combined in this area. There would be an extra cost of punching a hole in the wall, but since the whole structure is being rebuilt, this extra cost should not be too much.

In order to get bike traffic from Riverside Drive to the rotunda, a two-way protected bike lane would need to be installed along the south side of 79th Street. Currently, the two eastbound lanes on 79th Street between the rotunda and Riverside Drive are fed by just one lane from the traffic circle, so removing one lane of space from automobiles and giving that to bikes would not create an issue. The intersection of 79th and Riverside Drive would be a bit more complicated as another exit from the Henry Hudson Parkway feeds into this intersection. This part of 79th and Riverside is currently quite dangerous and hostile to pedestrians. Impatient drivers coming off the highway frequently run red lights, so adding the two-way protected bike lane would prove an opportunity to redesign and fix a dangerous intersection that is also a major entrance to Riverside Park.

The DOT design proposal also has issues with pedestrian access to the rotunda. DOT did not make available a digital copy of its presentation, but from what I saw, the city is proposing to eliminate the pedestrian ramp at the north side of the rotunda. Currently, a steep wooden ramp has been laid on to top of the stairs allowing for parents to get strollers to the rotunda. This ramp is probably too steep to be ADA compliant, but many thousands of parents have been successfully using this ramp for years.   

By eliminating this ramp from its design, DOT would be creating a situation where many parents who pushed their strollers a fair distance from Riverside all the way to the rotunda would be forced to turn around and head all the way back to Riverside Drive to cross the street before being able to access the rotunda. In addition, for many parents who have no problems with the current incline of the ramp, using the ADA-compliant ramp on the south side of the rotunda would be less appealing. The ADA ramp with all of its extra twists and turns would make for a longer, more unpleasant climb up from the plaza; and for parents looking to head north, the loss of the north side ramp would force them to cross 79th Street.

The decisions that DOT makes regarding the reconstruction of the 79th Street Rotunda will impact the Upper West Side for the next five decades. Upper West Siders aspire to be able to bike safely to Riverside Park with their kids. Robert Moses didn’t think that bikes had any place in New York. In the last 80 years, we have learned that Robert Moses was wrong, and biking is good for cities. DOT should not sentence Upper West Siders to another five decades of unsafe biking conditions. The proposed plan shows just how easy building safe biking infrastructure can be.

Mark Gorton is publisher of Streetsblog.

  • Avi

    This is a good start, but DOT and Parks still need to work together on a plan for cyclists riding thought the park. The current Parks plan sends cyclists into the traffic circle, and with these DOT plans, cyclists will now need to enter car traffic and ride all the way around the circle just to continue on the Greenway. A cyclists riding through on the Greenway should not have to enter car traffic just to continue on the Greenway.

  • AstoriaBlowin

    Would be wonderful to get rid of the entire structure and eliminate the 79th st entrance/exit altogether. It would save 100s of millions in reconstruction and maintenance costs and make the park much nicer. Will never ever happen of course, since NYC leadership has no courage to do anything other than perpetuate the anti-urban status quo first put forward 80 plus years ago.

  • Elizabeth F

    I agree, that is loony. Of course, 99% of cyclists will just go straight through the way they do now. It’s the next perfect ticket trap for NYPD looking to harass cyclists.

  • Elizabeth F

    Does your suggested redesign account for the probable mandatory detour for bicycles away from the Hudson River? If that detour ever gets funded/constructed, then ALL bicycle traffic on the Greenway will be going through this rotunda.

  • SteveVaccaro

    How much of the 100s of millions of reconstruction costs are attributable to enhancing the dining experience in the restaurant?

  • crazytrainmatt

    I must say I’ve never mustered the dedication needed to figure this mess out. The last time I somehow found myself biking through the restaurant. It sure would be nice to have a better connection here.

  • crazytrainmatt

    $200M or so would close the UN/midtown gap in the east river greenway.

  • crazytrainmatt

    $200M or so would close the UN/midtown gap in the east river greenway

  • Maggie

    I’m curious to know the considerations involved in the parking garage within this park and frankly why we’re building a parking garage. Which suburban commuters will be permitted to park their personal cars in it, what will they pay for the parking, and how much does the expense add to the total $200 million cost of the project?

    If we can’t accommodate bicyclists here I’m not following how we can accommodate parking.

  • Learned Hand

    The parking garage has always existed there.

  • Learned Hand

    That, and the rotunda is landmarked.

  • KJ

    Or better yet, keep the structure but ban cars and open it to pedestrians and bicyclists (and maybe carriages?) with a max speed of ~10 mph.

  • Maggie

    Yes, my question is why am I spending money to rebuild it.

  • HamTech87

    Good proposal. Cycling eastbound on 79th Street is also pretty scary with the buses and the odd placement of the lane/sharrow to the left of the right lane. (Yes, I know it is to avoid right hooks, but it is terrifying especially with kids.) I’d love to see a PBL on 79th Street.

    I can’t believe there is a parking garage there. Is it open to all motorists or just for people who work in park or restaurant? Does it cost money to park there? What is its utilization?

    Can we stop providing free parking to construction crews? They should take transit, bike, or walk like most city workers. And if this means some workers won’t want to take the job, then there are plenty of inner-city workers who would love these higher-paid city contract jobs.

  • frankehall

    Just to clarify, the standards for an ADA-compliant ramp is not something like parents pushing strollers. Parents pushing strollers can negotiate inclines that disabled persons in wheelchairs cannot, which would be why the designers would feel the necessity to construct a (longer) ADA-compliant ramp, even though parents have been successfully using that wooden ramp over the stair, for many years. The federal ADA, moreover, doesn’t give them any choice, but to create accessible access, when doing a project of this magnitude.

  • frankehall

    Construction crews are often arriving at a jobsite with heavy gear, including steel-toe workboots, hardhats, heavy gloves and coats for working outside, as well as tools. These are not people who would be biking to their job. They’re typically not city workers, either. They work for the contracting firm awarded the job, and might live 50 miles away.

  • Joe R.

    The standard for ADA compliant ramps is a slope of 1 in 12 but in general 1 in 20 or less is preferred if space permits because you can avoid a landing every 30 inches of vertical rise:



  • Austin Busch

    Yes, but the RFP could instead make the construction bid pay to lease an existing lot nearby.

  • frankehall

    Certainly. Just a question of the economics of the project. The city would have to be willing to add that extra cost to the project, assuming there was a lot available for lease, nearby.

  • frankehall

    Yes, exactly, Joe. If the slope is less than 1:20, then it’s not a ramp, but a “sloped walkway,” and doesn’t come under as stringent requirements.


DOT's redesign of the 79th Street rotunda omits protection for people attempting to access the country's most popular bike path. Image: DOT

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