A raised traffic median is just a long trough with soil in it. And, of course, plantings, and sometimes trees.
The City of New York has applied its hive mind to widening the street medians of the Grand Concourse, which is what brings me here – to inspect the existing trees that might be impacted by the street construction, and to check out the importation of shrubs etc. when it takes place later this fall, in the cool planting season.
So… why is this happening? We’re talking about a raised median, which is rare in NYC. Yes, there is the West Side Highway, which I was lucky enough to tour in a golf cart earlier this year when bidding for a job to maintain its vegetation.
There’s a strip of beautiful trees and roses in season dividing two lengths of highway, all with a phenomenal view of the Hudson River.
Every median holds 24 inches of soil above the roadbed, according to the Department of Transportation Street Design guidelines. Hard to imagine this collection of construction debris materializing into a cohesive bed of plants, but that’s the plan. And crews are hard at work making it happen.
It seems that the point is not only beautifying a thoroughfare but controlling the vehicles that use it. Lane narrowing, which comes about when more space is taken up by medians, has the effect of what the experts call “traffic calming.” Sometimes cities remove an entire lane, which is known as a “road diet.” In this case the road will still be wide, 2 lanes northbound and southbound and service lanes on either side as well.
There is a famous, old traffic median in this city, running the length of Park Avenue north of the Helmsley building, which straddles it. It might be worth visiting NYC just to drive through that twisty tunnel. The median’s tulips and begonia beds date to the 1950s.
The park narrowed over the years but I’ve always found it beautiful, and obviously diligently cared for.

Back in the day, traffic was a bit unwieldy in NYC, especially at the turn of the century, when horse carts jockeyed for space with street cars, pedestrians and even some automobiles.

Pictures from the turn of the 20th century show traffic going every which way. It definitely needed some calming! Park Avenue, though, was a respite – it was actually a pedestrian park seated in the middle of a tamer Park Avenue.
People could stroll, sit, push prams, whatever, in safety. Now the powers that be are planning a remake for Park Avenue to become more like it once was.
Designs have been sketched.
I want to go there and be calm.
But I think that the Grand Concourse will be completed first.
We have trees. Lots of honey locust.
Some of the areas farther downtown have already been finished.
It’s hard to imagine the stretch of the road where I monitor trees botanically beautified. I can’t wait to see it.
Love the terms “traffic calming” and “road diet”