The Parkway East’s Commercial Street Bridge is about to blow – but it’s not happening on Wednesday night.

PennDOT say they were going to bring down the bridge sometime between 7 p.m. and 9 p.m. on Wednesday, but around 8 p.m officials and security said the explosion was postponed.

The demolition will be shown live on PennDOT’s project page or 511 PA, which also has cameras placed along the project’s detour routes.

Watch the live stream here:

A crowd of about 100 people gathered Wednesday evening at the Summerset at Frick Park residential development for a front-row view of the bridge demolition.

The atmosphere felt more like a neighborhood block party than a construction event. Families brought their children and pets, while groups of friends arrived carrying pizzas and coolers of beer. Lawn chairs lined the hillside as people in shorts and sunglasses settled in to wait for the explosion. Some spectators wore earplugs in anticipation of the blast.

A man with a ukulele strummed some folk tunes to liven the expectant atmosphere as police wrapped red caution tape around the edge of the hill, denoting the 800-foot security perimeter around the bridge.

Merav Amos, from Squirrel Hill, brought her family for a picnic, complete with books, lawn chairs and glasses of wine.

Amos said she planned the trip when PennDOT released its expected demolition window, but realized then and there that there was one thing she had forgotten.

“I actually hope it’s not going to be too loud, because we don’t have earplugs,” she said.

From the Parkway East watch party. @AdamBabetski pic.twitter.com/CaNMvsmKRV

— Ben Schmitt (@bencschmitt) July 15, 2026

Amos lives near the Parkway East’s local detour route, and has had to deal with traffic increasing near her home since the bridge closed on Friday. She hoped watching the demolition live would provide a satisfying payoff.

“The last few days were very rough,” she said. “I want to see some action.”

Jim Christy, of Robinson, parked in the South Side and made the journey over on his bike to watch the explosion.

Christy frequently bikes through the Frick Park trails — some of which were restricted on Wednesday ahead of the demolition.

“It better go off without a hitch,” he said.

David Cohen grew up playing on a wooden field.

“You had to be sure-footed,” he recalls about pickup games on Shadyside’s Roslyn Place, one of the nation’s few surviving wooden streets.

Cohen often talks up Roslyn while chauffeuring movie actors around town. “Inevitably,” he says, “they want to come see the street.” It also draws many walkers, bicyclists, bachelor and bachelorette parties, photographers, artists and people who make rubbings of its oak blocks.

Many other Greater Pittsburgh streets are paved with bricks or stones of various shapes and shades. These old-time toppings seem to be popular but problematic.

They’re considered handsome reminders of Pittsburgh’s past. They’re expensive but durable. They sprout weeds but seldom potholes. Some may reduce runoff and heat.

But they’re bouncy and clattery. They can be slippery when wet or icy. Though many have concrete bases, they tend to develop ruts over time.

Officials often wonder whether to maintain historic pavers or consign them to history. Jacob Russell, Verona’s borough manager, says, “It’s always an ongoing debate.” 

Here and there

According to a list of Pittsburgh’s nearly 20,000 official street segments, 623 have bricks, 295 quarried stones (often incorrectly called cobblestones, which are long out of use), and 840 concrete, while the rest are asphalt or “unknown.” But be warned: Some entries on the list are outdated, and one’s been wrong all along. It calls Roslyn asphalt.

Then again, Knoxville’s Brick Way is listed correctly. It’s plain asphalt, at least today. Brian Kell, a chronicler of Pittsburgh’s streets, can find no record of previous surfaces on this tiny street, first known from an 1887 plan.

Some streets with brick or stone sections are big and bustling, like downtown’s Grant Street. More seem to be small and quiet, like the Hill District’s Hollace Street. Some are fairly level, like Homewood’s Laxton Street. Others are dizzying, like Oakland’s Joncaire Street and Beechview’s Canton Avenue.

Older pavers seem most common in older neighborhoods, such as Hazelwood, but are rather randomly scattered in them. Squirrel Hill’s Murdoch Road has stone, brick and asphalt segments on different blocks. Middle Street on the North Side has a stone one and a brick one on the same block.

These pavers are also common in older suburbs, such as McKees Rocks, Oakmont and Sewickley. McKeesport once had a Brick Alley, named for its surface, though better known as a red-light district.

Allegheny County also has 26 miles of dirt or gravel roads, historic, but hardly beloved.

Streets through the years

According to several sources, including Robin B. Williams of historicpavement.com, the world’s first roads were unpaved, prone to dust, mud and washouts. American settlers topped “plank roads” with boards and “corduroy roads” with logs. Cobblestones proved tough on wheels. A mix of crushed stones was dubbed macadam for Scottish inventor John McAdam. Tar was added and one of the mixes dubbed tarmac.

Wooden blocks became popular, including an 1850s kind called Nicolson or Nicholson blocks, chunks preserved with creosote. So did granite, limestone or sandstone blocks, variously called sets, setts, blockstones or Belgian blocks. The 1870s brought bricks and asphalt. The 1890s brought concrete.

According to Joel Tarr in “City at the Point,” 19th-century Pittsburgh was quickest to pave the busiest or wealthiest streets, sometimes charging the property owners. Many other streets remained unpaved into the 20th century.

By the mid-1910s, wooden streets were already quaint, the look Roslyn’s developer apparently wanted for this cozy dead end, lined mostly with brick homes. It helped that his son owned a lumberyard, which supplied about 26,000 blocks.

Over the years, the city has replaced many of those blocks with newer ones. To spare them all, it blows and sweeps snow there instead of plowing it.

Williams says that the nation has just a few other wooden streets left, including Cleveland’s Hessler Court, part of Philadelphia’s South Camac Street, and Chicago’s aptly named Wooden Alley.

Beautiful and bumpy

Most locals praise vintage pavers.

“They’re the coolest things,” Kathy Lutz says of Bridgeville’s several brick streets. “They make me feel nestled in here.” They also remind her of a famous Beatles album cover. “We have Abbey Road in the middle of Bridgeville.”

A stone stretch of Bloomfield’s Lima Way is smooth enough for Kelly DiTullio to carry a heaping carton of strawberries home from the neighborhood’s farmers market without spilling any. “It’s charming,” she says, “especially when the greenery starts to grow in between.”

A woman identifying herself just as Kelissa says that her dog, Princess, likes Lima’s stones for relieving herself.

Locals see benefits even in these pavers’ bounces. Drivers slow down, and bystanders hear them coming.

In Mt. Lebanon Magazine last year, Abigail Schade Gary wrote about that suburb’s many brick pavers, “The charm! The distinction that signifies Mt. Lebanon!” Not quite as enthusiastically, she recalled sliding backward down them in her family’s station wagon. She liked them for sledding but not roller-skating. “Even if you could manage to stay on your feet over the bumpy surface, the unevenness made your teeth chatter.”

A few locals would update some retro roads. “Most of them are in such a state that they need to be paved over,” says Mt. Lebanon’s Greg Carvlin.

Cara Zlatos recently hit the bricks of Aspinwall’s Delafield Avenue after an appendectomy at UPMC St. Margaret. She says, “Every bump seemed to find its way straight to my sore abdomen.”

Melissa Lang O’Malley, Aspinwall’s borough manager, says that Delafield’s much-needed repairs will resume this summer.

Bicycles bounce too. According to Julie Walsh, spokeswoman for BikePGH, most riders prefer modern pavement for routine rides, but some choose brick or stone at times for fun, especially in challenging events like the Pittsburgh Roubaix and the Pittsburgh Dirty Dozen.

Bicyclist Henry Snyder of Squirrel Hill says that historic pavers “give you a little chance to experience what the Tour de France guys do in Paris. You don’t want to do it too long because it sends vibrations down your arm. For a block or two, it’s great.”

Saving surfaces

A 2018 Pittsburgh ordinance calls for preserving historic pavement where safe, unless 75 percent of the street’s property owners petition for asphalt. Eric Setzler, chief engineer of the Department of Mobility and Infrastructure, says that it costs $30 per square yard to resurface asphalt, versus $170 for brick or $200 for stone. But brick and stone can last for decades, especially on streets with light traffic.

“There are streets that are probably over 100 years old that have had minimal maintenance,” he says. “They will have some dips and bumps, but they are still in service. … The cost can even out a little.”

Aspinwall’s Lang O’Malley says that recent brick repairs cost about $12 per square foot versus barely $2 for asphalt, but might prove better investments over 30 to 50 years. Besides, “While modern infrastructure needs sometimes require difficult decisions, preserving that historic character where possible remains an important part of maintaining Aspinwall’s identity.”

In a 2016 study of Mt. Lebanon’s brick streets, the Pennsylvania Department of Transportation said, “Though costly to install, these streets maintain a good structural condition for decades and add beauty and history to the area.”

In 2020, a Carnegie Mellon University team estimated that Mt. Lebanon would save about $200,000 over 50 years by maintaining a stretch of brick 700 feet long instead of asphalting it. Ninety-six percent of residents surveyed said the bricks added character, and 82 percent would pay to restore them.

Safety matters, though. A steep brick stretch of that suburb’s Spruceton Avenue was asphalted after an official did a 360 on ice there.

Verona, on the other hand, simply closes a steep stone section of South Avenue during wintry weather.

PennDOT maintains just 0.2 miles of bricks or stones on state roads in Allegheny County: stretches of Chestnut Street in Coraopolis, Broadway in Stowe Township and Linden Avenue in East Pittsburgh. “Generally,” says PennDOT Press Secretary Alexis Campbell, “we end up paving them with asphalt.” 

Old pavers are often buried under asphalt but reappear in potholes. Others are removed and sometimes relocated. A few are part of the landscape of the Children’s Museum of Pittsburgh. Some that PennDOT removed from Castle Shannon Boulevard in Mt. Lebanon are parts of that suburb’s other streets.

Magic and texture

In the 2010s, resident Ned Schano led a campaign that won city landmark designations for Roslyn and specifically its wood. “Every day,” says Schano, “I make sure to step on the wood when I go outside. It has some magical powers.”

Cohen feels like Roslyn’s wood is ingrained in him. “It’s been a great texture for my whole life. To see it’s still here when so many other things have gone away, it’s amazing.”