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The Amazing Story of the Abandoned Westinghouse Atom Smasher in Pittsburgh

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Only a short distance east of downtown Pittsburgh, you’ll find one of the most interesting and historically important abandoned places in PA: the Westinghouse Atom Smasher.

Located in a residential area of Forest Hills, the Westinghouse Atom Smasher is an iconic piece of the United States’ nuclear history. Today, however, it lies on its side, surrounded by piles of rubble composed of the building that once supported it.

The field surrounding the Westinghouse Atom Smasher near Pittsburgh Pennsylvania
The Westinghouse Atom Smasher sits abandoned in a site slowly being reclaimed by nature.

Hopefully, it will one day be preserved within the collection of a museum, but, for now, it can be seen laying on the ground about 100 feet from a chainlink fence that surrounds the property. (Please only enjoy this spot from the public roadway and don’t try to get a closer look. All photos in this article were taken from outside of the fence, so you don’t need to trespass to see it.)

I have full information on how to find this fascinating spot, but, first, it’s worth learning about its history.

The History of the Westinghouse Atom Smasher

Westinghouse Atom Smasher lies in a field beyond a fence and next to a road
Looking over the road and fence towards the Westinghouse Atom Smasher.

The Westinghouse Atom Smasher (which we would now call a particle accelerator) is a 5 MeV Van de Graaff electrostatic nuclear accelerator, the first industrial one of its kind in the world. It was put into operation in 1937 at the research laboratory for the Westinghouse Electric Corporation.

The Westinghouse Atom Smasher was instrumental in studying the practical uses of nuclear technology to create energy. Some of the research done here may have even been used by those building the first nuclear weapons at the Mahanntan Project in the 1940s. 

A neat graph that explains how the Westinghouse Atom Smasher near Pittsburgh worked.
A neat graph that explains how the Westinghouse Atom Smasher worked. (Public Domain)

What you see on the ground is actually the tank that surrounded the delicate machinery inside. This 65-foot tall and 30-foot in diameter shell was covered in aluminum paint, which gave it its silver appearance.

Inside the large pear-shaped shell, there were several tubes that would have allowed various particles to be accelerated to very high speeds during experiments conducted at the site. While there is a lot more to it than that, of course, I’m not exactly a nuclear engineer, so I’ll leave it at that. (If you want to know more about how it worked, here’s a Wikipedia article to read.)

The Westinghouse Atom Smasher on the ground behind a lawn and trees
Looking towards the atom smasher.

While the Westinghouse Atom Smasher was technically in operation until 1958, the atom smasher didn’t see much, if any, use after the start of World War 2. However, it continued to sit atop the building for many more decades to come.

In fact, it would be nearly 60 years after it was decommissioned before the long-abandoned building it sat atop was demolished in January 2015. Interestingly, at the time of publication in early 2022, you can look at Google Streetview and still see the atom smasher standing atop the building as the images haven’t been updated since 2011.

Since 2015, Pittsburgh’s Westinghouse Atom Smasher has sat on its side about 100 feet from the barbed-wire-topped chainlink fence that surrounds the property.

Still a dull silver in color, it looks like a giant lightbulb sitting in the middle of a large concrete pad. You can even still see the large Westinghouse “W” affixed to the side in red paint.

The Westinghouse Atom Smasher next to piles of rubble that were once part of the Westinghouse Research Laboratory.
The Westinghouse Atom Smasher next to piles of rubble that were once part of the Westinghouse Research Laboratory.

Surrounding the atom smasher are large piles of bricks and other building materials that have been strangely left sitting in the middle of this barren landscape.

Across the narrow alley, are the garages of residential homes. This is certainly an interesting place to find one of the country’s most historic pieces of nuclear history decaying.

How to See the Westinghouse Atom Smasher Near Pittsburgh

The Westinghouse Atom Smasher sitting adjacent to an alley in Forest Hills PA
The Westinghouse Atom Smasher is located near a fence and along a residential alley.

The Westinghouse Atom Smasher can be found approximately 10 miles east of downtown Pittsburgh near the border of Forest Hills and Chalfant in Allegheny County, PA.

As stated above, it is hidden away behind a residential neighborhood and just over a small treeline from the Lincoln Highway (Route 30), though it’s not visible from that road.

Looking through a chainlink fence towards the Westinghouse Atom Smasher in Pittsburgh PA
Make sure to enjoy this spot only from the public side of the fence.

It can be found at the following coordinates along Service Road 1: 40.411198, -79.842909. If you’d rather use a street address, head to 364 Avenue A, Pittsburgh, PA 15221, and then continue walking down Avenue A until you see the atom smasher off to your left.

It’s worth noting that Service Road 1, where you’ll view the Westinghouse Atom Smasher from, is a narrow alley and there is nowhere to park along it. So, if you want to get out of your car for a look, you’ll want to find parking on one of the nearby residential streets. Do not park on Service Road 1 or bother any of the nearby homes.

Westinghouse Atom Smasher Historical Marker near Pittsburgh PA
Don’t miss the historical marker nearby.

Keep in mind that the site is completely surrounded by a chainlink and barbed wire fence, and there are signs indicating that the area within the fence is private property. Please only enjoy this unique historical spot from outside of the surrounding fence. 

While visiting the area, make sure to visit the four-way intersection of Service Road 1, West Road, Avenue F, and North Avenue. Here, you’ll find a Pennsylvania historical marker tells a bit of the story about the importance of this site, though the text hasn’t been updated since the building was torn down.

Looking for more places to visit nearby? Check out the abandoned Carrie Furnace, Braddock’s Battlefield History Center, the Center for PostNatural History, and The Living Dead Museum.

[Click here for information on how to use the coordinates in this article to find your destination.]

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8 thoughts on “The Amazing Story of the Abandoned Westinghouse Atom Smasher in Pittsburgh”

  1. I was informed that the internal parts were transferred to the Westinghouse R&D Facility in Churchill Boro and put into use there later on, around 1957. Later on the technology ended up at the University of Pittsburgh Nuclear Physics lab. Sadly It is all gone these days.

  2. There’s a story in the book “Pittsburgh Noir” (edited by Kathleen George) which revolves around the Atom Smasher. That story is how I first learned about it. Pretty cool to read this article and see the pictures

  3. It’s a metaphor. Another forlorn reminder of a time when American innovation led the world — in this case, for better or worse. Kinda sad on several levels.

  4. Jim you didn’t mention the geese or duck pond that was ,as the story goes where they monitored the fowl to see if they got sick or died ,which would have meant a leak,you could at times see the pond from route 22

  5. I lived in Squirrel Hill the first 30 years of my life. Glad to read your article. I am passing the link along to others.


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