By Jared Ebersole in Video — 29 Jun 2026

The Manhattan Apartments Built Directly Over I-95

The Bridge Apartments turned air rights above the Trans-Manhattan Expressway into housing, then left residents living over one of New York's dirtiest traffic funnels.

The Bridge Apartments look like a real-estate loophole made habitable.

Four 32-story towers rise over the Trans-Manhattan Expressway in Washington Heights, just before I-95 reaches the George Washington Bridge. If you have ever sat in traffic there, you know the view: apartment slabs standing directly over the highway, while cars and trucks pour underneath them toward New Jersey or the Cross Bronx.

The idea was bold.

The air was the problem.

Where they are

Bridge Apartments, over the Trans-Manhattan Expressway between West 178th and West 179th Streets, Washington Heights, Manhattan, NY 10033

In 1960, the Port Authority transferred the air rights above the expressway to the city, and the city sold them to developer Marvin Kratter's company for about $1 million. On paper, it was an irresistible deal: take land that did not seem to exist, build platforms above the road, and create hundreds of middle-income apartments in a high-demand part of Manhattan.

The project was part of an era that believed infrastructure could be stacked into efficiency.

Highways, housing, buses, bridges, and urban renewal could occupy the same territory if engineers were clever enough. The Bridge Apartments were built between 1961 and 1964 as four towers on concrete platforms over the expressway. Each tower contained 240 apartments, for a total of 960 units. The buildings were financed through New York's Mitchell-Lama program, which exchanged public support for regulated middle-income housing.

Structurally, the project was impressive.

The highway had to keep functioning. The towers needed foundations that could carry 32 stories of apartments without turning the expressway into a forest of columns. Concrete platforms and deep girders created new ground above the road. The buildings made real estate out of air.

But holding the buildings up was only the first problem.

The road below carried enormous traffic volumes. The draft script cites 150,000 vehicles a day, and contemporary accounts of the complex describe residents living over one of the region's most intense traffic corridors. That meant noise, vibration, and exhaust were not side effects. They were the building's environment.

The cleanest technical answer would have been to fully enclose and ventilate the highway like a tunnel, pulling polluted air away from the apartments and exhausting it safely. But that would have been expensive. Instead, the gaps between the towers were left open so the expressway could breathe.

That meant the residents had to breathe near it.

Complaints began quickly. Residents said they could not open windows or comfortably use balconies because of noise and fumes. In the 1960s, Senator Robert F. Kennedy visited and proposed a vaporproof barrier over the roadway. The problem was not imaginary. A 1973 study commissioned by the Environmental Protection Agency found carbon monoxide levels above federal guidelines and recommended sealing the lower levels of the buildings to keep dangerous gas out.

The physics made it worse in winter.

When the buildings were heated, warm air moving upward could create a chimney effect, pulling polluted air from the expressway zone through the structure. In other words, the towers did not just sit above exhaust. Under certain conditions, they helped draw it upward.

That is the brutal part of the design.

The balconies were marketed as a luxury. They offered height, views, and "in-the-sky" living above the city. But a balcony over a highway is still a balcony over a highway. The amenity was also an exposure point.

The Bridge Apartments remain occupied because New York housing is complicated. The buildings provided hundreds of apartments, many for working-class and middle-income residents, in a city that never has enough housing. They are not an abandoned mistake. They are home. That makes the story harder and more important.

It is easy to call the project a terrible idea from a distance. It is harder to admit that the same city still depends on similar bargains: build over rail yards, stack roads under buildings, sell air rights, hide infrastructure, and hope design can solve the environmental cost later.

The Bridge Apartments were ahead of their time in one sense.

They showed that New York could manufacture land above infrastructure.

They also showed what happens when the air rights come with actual air.